I believe this has been caused by the removal of “Internal PDF generator” in version 25.6.19.2406
All themes which worked as intended for years, are now effectively broken visually
This feature appears to be missing as shown on the pictures below
Version 25.6.19.2405 below
Version 25.6.19.2406 below
I also believe this was removed in version 25.6.19.2405, and the icon was removed in version 25.6.19.2406
Indication to this is a 25MB software size drop during those versions which looks like it held the pdf generator
This is only a speculation though, but this change also affects me and our businesses which are now forced to either rewrite the themes, or find a backup from before 18th of June, as the manager data files cannot be downgraded once they are opened in a newer version of the software