Fonts instabilty in Mojave

tsjuge

Since I installed Mojave on my Macbook Air, my fonts turn into boxes with question marks at least once a day. It gets resolved by restarting computer. At first, I thought it was Safari acting up but I see it happen when I use Numbers and even with the fonts for all my icons. I have tried to resolve all fonts duplicates in Fontbook several times, I have validated fonts but it keeps happening. Any help would be appreciated.
Thank you

tsjuge

Example of what I get:

Marvin

Your fonts are in /Library/Fonts, /Users/username/Library/Fonts and /System/Library/Fonts. You can move the fonts out of the first two folders and the OS will only use the system fonts. You can then add the other fonts you need back into those folders when you need them.

It may be caused by a cache issue. Booting in safe mode by holding shift at startup will clear and rebuild your font caches.

http://osxdaily.com/2015/01/08/clear-font-caches-databases-mac-os-x/