So, could you consider updating the Qt version embedded in Lightburn to a more recent version, a minima 5.12.4 ?
I think current Lightburn is using a Qt 5.11, which is a version from 2018.
In openSUSE Tumbleweed I had the option to install libopenssl1_0_0 and that works for now but this is old and will probably be gone from all distros when it is no longer maintained which might be now. I am at QT 5.15.18. Not essential to check updates but it would be nice to be as functional as a Windows version.
Updates to QT are planned, but doing so is a delicate matter because moving forwards will affect compatibility of some systems and features. It’s on the road map but I’m unable to provide a timeline for this.