Let's start with:

If you have sync, and there is a problem anywhere, Shut Down Sync Immediately On All Devices to prevent the problem from spreading. Once the problem is fixed, perform the same repair on all computers/profiles before using sync again.

[v57+] Places Maintenance is built into Firefox.

Type about:support<enter> in the address bar.

You will find Places Database near the bottom. Press the Verify Integrity button.

When done, copy and post the results here.

https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional

I'm not seeing this reported in the main Wayland bug as a defect, but the list of appended bugs is quite long.

• https://bugzilla.mozilla.org/show_bug.cgi?id=wayland

Those are a really lot of entries related to wayland. I also did not find anything similar in bugzilla and so i decided to make a new bug report .

Thank you cor-el to point me to the right place.