I have a fairly large solution (89 tables, 184 layouts, 25+ users, hosted on FMS 18.104.22.168, most users FMP 15) that has self-changing styles. At least 4 times in the last couple months, I have had fonts change on their own. Fonts change within styles. I can't be absolutely sure, but I think some objects have lost their style completely and reverted to the default style. The font of the default style seems to change to "Courier New", a font I would never use on a display layout. This happens across multiple styles and multiple themes.
There is only one user (me) with rights to change layouts. I'm not doing it.
I don't know if it's related, but every 2 weeks I have a scheduled "Verify" server script. It ran Sunday morning. When I opened the file Monday morning, several of my styles had changed.
Any suggestions to make this stop. I have users complaining that the look of things keep changing.