There has not been a Linux version of WordPerfect for nearly 15 years, and it was buggy. It looks like this is just working off of WINE. Does anyone know if the compatibility extends to Filemaker Pro Advanced 15 and up? Adobe Acrobat Pro (which has issues even running in Windows), etc.
Not sure if this might be helpful. Got a linuxmint 19.1 computer installed with virtualbox 6.0.2. Within virtualbox, have win32bitxp running some old ten+ year software - so far it’s been stable. Maybe you can try installing your old software that way.