IDE Scripts stop working

XOJO 2020r21 - Windows 10 Desktop

I have a few scripts that I use to insert a ‘Header’ or ‘Footer’.
When I code and I select one of these script everything works fine, but only for a while.
For some reason they stop working, and I need to quit Xojo and restart before they work again.

Is this a knowing bug ?
Are there other users with the same problem ?