This entire forum is monitored by LightBurn support staff and the development team and we are very active and respond very frequently. The word “crash” or “closed unexpectedly” gets our attention quickly. Thank you for reporting any issue you are having.
Did you get any crash report presented when this happens? We want to see any report when this happens so please include when reporting.
I see Ruida listed in your profile which is helpful, but we are also going to need any other information that will help us reproduce here so we can track down and fix. More, in this case, is better.
Which OS and version number, Which version of LightBurn?