No to me - but I made only minimal engravings.
Not to others - but noone else is using Linux, so it may be a Linux specific bug.
EDIT: stopped again, now on vector line. Nothing special on display just a freeze.
EDIT2: installing LightBurn 9.20 and opening file with renamed extension lost some elements - seems that difference is in the same or very similar place as laser freeze (plenty other things also disappeared so it may be a pure coincidence).
podstawki.lbrn2 (3.1 MB)
What disappeared? 2 shapes on the bottom right
This shows where laser stopped.