Telegram tray icon is suddenly a blurry pixmap, not a sharp svg

Sometime recently, the sharp Telegram vector tray icon was replaced with a blurry pixmap. Example picture.

plasma-desktop is 5.23.5-2. breeze-icons provides the Telegram svgs and is 5.90.0-1. I’m running a Wayland session, though I’m not sure if that is relevant here. The desktop is scaled by 2x.

I have two users on this machine, and both experience the same behaviour. So it doesn’t seem to be a local ~/.cache thing, but regardless, I did try removing ~/.cache/icon-cache.kcache and restarting plasma, to no effect.

What else can I try?

edit: Forgot.

System:
  Kernel: 5.15.19-1-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
    parameters: BOOT_IMAGE=/@/boot/vmlinuz-5.15-x86_64
    root=UUID=f23fde82-93ba-48a2-8af4-d111a9007d6a rw rootflags=subvol=@ quiet
    apparmor=1 security=apparmor
    resume=UUID=dd07bde4-73ab-48fc-af25-0eaf05161348 udev.log_priority=3
    audit=0 mitigations=off log_buf_len=64M i915.mitigations=off
    intel_iommu=igfx_off split_lock_detect=off memmap=12M$20M
    lsm=landlock,lockdown,yama,apparmor,bpf nmi_watchdog=0 nowatchdog
    i915.enable_fbc=1 i915.enable_psr=0 kernel.sysrq=1
    dev.i915.perf_stream_paranoid=0
  Desktop: KDE Plasma 5.23.5 tk: Qt 5.15.2 wm: kwin_wayland vt: 2 dm: SDDM
    Distro: Manjaro Linux base: Arch Linux
Machine:
  Type: Laptop System: Dell product: XPS 13 9310 v: N/A
    serial: <superuser required> Chassis: type: 10 serial: <superuser required>
  Mobo: Dell model: 0MRT12 v: A00 serial: <superuser required> UEFI: Dell
    v: 3.4.0 date: 12/14/2021
Battery:
  ID-1: BAT0 charge: 42.9 Wh (100.0%) condition: 42.9/51.0 Wh (84.2%)
    volts: 8.5 min: 7.6 model: LGC-LGC6.5 DELL 2XXFW11 type: Li-poly
    serial: <filter> status: Full
Memory:
  RAM: total: 30.78 GiB used: 17.89 GiB (58.1%)
  RAM Report:
    permissions: Unable to run dmidecode. Root privileges required.
CPU:
  Info: model: 11th Gen Intel Core i7-1185G7 bits: 64 type: MT MCP
    arch: Tiger Lake family: 6 model-id: 0x8C (140) stepping: 1 microcode: 0x9A
  Topology: cpus: 1x cores: 4 tpc: 2 threads: 8 smt: enabled cache:
    L1: 320 KiB desc: d-4x48 KiB; i-4x32 KiB L2: 5 MiB desc: 4x1.2 MiB
    L3: 12 MiB desc: 1x12 MiB
  Speed (MHz): avg: 1588 high: 2096 min/max: 400/4800 scaling:
    driver: intel_pstate governor: powersave cores: 1: 1216 2: 1346 3: 1506
    4: 1612 5: 1576 6: 1451 7: 2096 8: 1901 bogomips: 47936
  Flags: 3dnowprefetch abm acpi adx aes aperfmperf apic arat
    arch_capabilities arch_perfmon art avx avx2 avx512_bitalg avx512_vbmi2
    avx512_vnni avx512_vp2intersect avx512_vpopcntdq avx512bw avx512cd
    avx512dq avx512f avx512ifma avx512vbmi avx512vl bmi1 bmi2 bts cat_l2
    cdp_l2 clflush clflushopt clwb cmov constant_tsc cpuid cpuid_fault cx16
    cx8 de ds_cpl dtes64 dtherm dts epb ept ept_ad erms est f16c flexpriority
    flush_l1d fma fpu fsgsbase fsrm fxsr gfni ht hwp hwp_act_window hwp_epp
    hwp_notify hwp_pkg_req ibpb ibrs ibrs_enhanced ida intel_pt invpcid
    invpcid_single lahf_lm lm mca mce md_clear mmx monitor movbe movdir64b
    movdiri msr mtrr nonstop_tsc nopl nx ospke pae pat pbe pcid pclmulqdq pdcm
    pdpe1gb pebs pge pku pln pni popcnt pse pse36 pts rdpid rdrand rdseed
    rdt_a rdtscp rep_good sdbg sep sha_ni smap smep smx split_lock_detect ss
    ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp syscall tm tm2 tme tpr_shadow tsc
    tsc_adjust tsc_deadline_timer tsc_known_freq umip vaes vme vmx vnmi
    vpclmulqdq vpid x2apic xgetbv1 xsave xsavec xsaveopt xsaves xtopology xtpr
  Vulnerabilities:
  Type: itlb_multihit status: Not affected
  Type: l1tf status: Not affected
  Type: mds status: Not affected
  Type: meltdown status: Not affected
  Type: spec_store_bypass status: Vulnerable
  Type: spectre_v1 status: Vulnerable: __user pointer sanitization and
    usercopy barriers only; no swapgs barriers
  Type: spectre_v2 status: Vulnerable, IBPB: disabled, STIBP: disabled
  Type: srbds status: Not affected
  Type: tsx_async_abort status: Not affected
Graphics:
  Device-1: Intel TigerLake-LP GT2 [Iris Xe Graphics] vendor: Dell
    driver: i915 v: kernel bus-ID: 00:02.0 chip-ID: 8086:9a49 class-ID: 0300
  Device-2: Microdia Integrated_Webcam_HD type: USB driver: uvcvideo
    bus-ID: 3-6:4 chip-ID: 0c45:672a class-ID: 0e02
  Display: wayland server: X.Org 1.21.1.4 compositor: kwin_wayland driver:
    loaded: modesetting alternate: fbdev,vesa display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1200 s-dpi: 96 s-size: 508x317mm (20.0x12.5")
    s-diag: 599mm (23.6")
  Monitor-1: XWAYLAND0 res: 1920x1200 hz: 60 dpi: 168
    size: 290x180mm (11.4x7.1") diag: 341mm (13.4")
  OpenGL: renderer: Mesa Intel Xe Graphics (TGL GT2) v: 4.6 Mesa 21.3.5
    direct render: Yes
Audio:
  Device-1: Intel Tiger Lake-LP Smart Sound Audio vendor: Dell
    driver: sof-audio-pci-intel-tgl
    alternate: snd_hda_intel,snd_sof_pci_intel_tgl bus-ID: 00:1f.3
    chip-ID: 8086:a0c8 class-ID: 0401
  Sound Server-1: ALSA v: k5.15.19-1-MANJARO running: yes
  Sound Server-2: PulseAudio v: 15.0 running: no
  Sound Server-3: PipeWire v: 0.3.45 running: yes
Network:
  Message: No device data found.
  IF-ID-1: wlan0 state: up mac: <filter>
  IP v4: <filter> type: dynamic noprefixroute scope: global
    broadcast: <filter>
  IP v6: <filter> type: noprefixroute scope: link
  WAN IP: <filter>
Bluetooth:
  Message: No bluetooth data found.
Logical:
  Message: No logical block device data found.
RAID:
  Message: No RAID data found.
Drives:
  Local Storage: total: 953.87 GiB used: 816.93 GiB (85.6%)
  SMART Message: Unable to run smartctl. Root privileges required.
  ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Micron model: 2300 NVMe 1024GB
    size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
    lanes: 4 type: SSD serial: <filter> rev: 23000020 temp: 46.9 C scheme: GPT
  Message: No optical or floppy data found.
Partition:
  ID-1: / raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-2: /.snapshots raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-3: /boot/efi raw-size: 190 MiB size: 186 MiB (97.89%)
    used: 106 MiB (57.0%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1 label: ESP
    uuid: B058-656C
  ID-4: /etc/.snapshots raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-5: /home raw-size: 19.53 GiB size: 19.06 GiB (97.56%)
    used: 15.76 GiB (82.7%) fs: ext4 dev: /dev/nvme0n1p9 maj-min: 259:9
    label: home uuid: 9a66ab92-7cbb-45a6-9bba-478a3ca48154
  ID-6: /var/cache/pacman/pkg raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-7: /var/log raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-8: /var/tmp raw-size: 48.83 GiB size: 48.83 GiB (100.00%)
    used: 37.42 GiB (76.6%) fs: btrfs dev: /dev/nvme0n1p7 maj-min: 259:7
    label: manjaro uuid: f23fde82-93ba-48a2-8af4-d111a9007d6a
  ID-9: /win raw-size: 860.32 GiB size: 860.32 GiB (100.00%)
    used: 763.15 GiB (88.7%) fs: ntfs dev: /dev/nvme0n1p3 maj-min: 259:3
    label: win uuid: 72125A63125A2C7B
Swap:
  Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
  ID-1: swap-1 type: partition size: 6.84 GiB used: 497.7 MiB (7.1%)
    priority: -2 dev: /dev/nvme0n1p8 maj-min: 259:8 label: N/A
    uuid: dd07bde4-73ab-48fc-af25-0eaf05161348
Unmounted:
  ID-1: /dev/nvme0n1p2 maj-min: 259:2 size: 128 MiB fs: <superuser required>
    label: N/A uuid: N/A
  ID-2: /dev/nvme0n1p4 maj-min: 259:4 size: 990 MiB fs: ntfs
    label: WINRETOOLS uuid: EC50F14C50F11E50
  ID-3: /dev/nvme0n1p5 maj-min: 259:5 size: 15.72 GiB fs: ntfs label: Image
    uuid: E266F18166F156AF
  ID-4: /dev/nvme0n1p6 maj-min: 259:6 size: 1.36 GiB fs: ntfs
    label: DELLSUPPORT uuid: 2C7E57BE7E577F8E
USB:
  Hub-1: 1-0:1 info: Hi-speed hub with single TT ports: 1 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Hub-2: 2-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
  Hub-3: 3-0:1 info: Hi-speed hub with single TT ports: 12 rev: 2.0
    speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
  Device-1: 3-3:2 info: Shenzhen Goodix FingerPrint type: <vendor specific>
    driver: N/A interfaces: 1 rev: 2.0 speed: 12 Mb/s power: 100mA
    chip-ID: 27c6:533c class-ID: ff00
  Device-2: 3-6:4 info: Microdia Integrated_Webcam_HD type: Video
    driver: uvcvideo interfaces: 4 rev: 2.0 speed: 480 Mb/s power: 500mA
    chip-ID: 0c45:672a class-ID: 0e02
  Hub-4: 4-0:1 info: Super-speed hub ports: 4 rev: 3.1 speed: 10 Gb/s
    chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
  System Temperatures: cpu: 61.0 C mobo: N/A
  Fan Speeds (RPM): N/A
Info:
  Processes: 454 Uptime: 5d 22h 25m wakeups: 33001 Init: systemd v: 250
  tool: systemctl Compilers: gcc: 11.1.0 clang: 13.0.1 Packages: pacman: 1691
  lib: 495 flatpak: 0 Shell: Zsh v: 5.8 running-in: yakuake inxi: 3.3.12

This is a known issue based on changes within SVG files. Clearing the Plasma SVG cache fixes it. Do this: rm ~/.cache/*plasma* ; killall plasmashell && kstart5 plasmashell

If did not help, try strengthened variant of clearing cache (to be sure that it is not the cache-related issue)

  1. Log out from user session to shutdown all KDE and user apps which could use the cache.
  2. Enter TTY, for example TTY3: Ctrl+Alt+F3.
  3. Login in that textual terminal.
  4. Clear all cache and extra KDE-related stuff by entering these 3 commands: KDE - ArchWiki .
  5. Type systemctl reboot to reboot PC.

https://wiki.archlinux.org/title/KDE#Clean_cache_to_resolve_upgrade_problems

Known bug and there’s no fix yet:

Hmm, that is supposed to be fixed since frameworks 5.89. Current is 5.91.

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