I am a community member just like yourself and no kernel maintainer.
kernel on manjaro
Manjaro kernels are build from upstream source https://kernel.org
Manjaro kernel maintainer maintains a set of patches targeting specific hardware.
You can find these at core packages repo see the specific kernel repositories e.g. linux618, linux70 and linux71 - please consult the PKGBUILD to see which patches are actually applied (unused patches are kept for reference).
If this question relates to fix ntfs, I think kernel maintainer will say no.
ntfs is a proprietary alien file system and the kernel driver is reverse engineered and it is far from perfect.
Any reliance on ntfs is - forgive me for being blunt - not a Manjaro issue.
if you must have ntfs
Blacklist the kernel driver to prioritise the user-space ntfs-3g driver.
If your issue is related to boot because you mount the device in your fstab I advise to change your approach to use a set of systemd units (mount/automount) to mount the device when path is accessed.
More information on the use of systemd mount/automount units can be found in Contributions > Tutorials