Sysmac Studio some objects have no font

[JYG 13]

Sysmac Studio 1.31.0.10 crash sometimes, often when copying things like color palettes, string in the Output Window, etc. It's always with NA not NX.
I have a corrupted project because Sysmac Studio crash and save the project. NEVER use this file, restarts with the old file is better.
The text fields does not appear on all objects on the HMI and it's never the same object each time your download to HMI!

Check images below. Font is "No Value". Do you know how to resolve this problem?

[Crossbow 295]

Never seen anything like it.  Check your language settings and see if the fonts are still set there.

[JYG 13]

I'm using only US English default language.

If I close SYSMAC STUDIO and reopen my project, the FONT is there and all seem OK. But changing HMI pages and the FONT disappear on other objects on other pages!