@Andrew Heard: thanks for a files! Unfortunately I still don't get it.
Here is a video where I try exactly follow your steps right after restore your backup & copy presets. So please check it and let me know what you do differently, thanks.
Btw. I'm always pleased to see after restoring of anyone backup, how he was able to customize Locus Map to his needs, nice

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@alezy: in next Beta version, Locus Map will print some information into system log, so if you try this Beta, just create a log by
this method right after problem occurs few times, thanks!
@balloni55 : well presets overwrite it's config files in Locus/data/presets directory quite often and also validate if data inside are valid and remove these that aren't. So your Pro version after open/close preset edit screen, just save current config and also remove all around "functions panels", because these are not valid settings in latest Pro version.