Wayland is the direction the industry is taking and we, as users, have little resolve other than to either adapt or be left behind.
Manjaro has little choice but to follow upstream decisions as well as those of major players such as GNOME and KDE.
Ultimately, X11 will be removed completely.
The following, noted in the Stable Update 2025-12-08 Announcement, is only the more visible part of the initiative; no doubt there is much more to come.
See Known Issues and Solutions:
Please provide more detail. To start with, your system information as described (below) to give others the opportunity to identify possible contributors to your problem(s).
I’m sure someone will help further when they are able.
Regards.
System Information
While information from *-fetch type apps might be fine for someone wishing to buy your computer, for Support purposes it’s better to ask your system directly; 
Output of the inxi command (with appropriate parameters, and formatted according to forum guidelines) will generate information useful for those wishing to help:
Suggested inxi command (use either):
inxi -zv8 |
(short-form) |
inxi --filter --verbosity=8 |
(long-form) |
| inxi man pages | (manual) |
If running `inxi` within a `chroot` environment
- Add
--color=0to the long-form command, or… - Change the short-form command to
inxi -zv8c0