Program issues using Parallels 26 in Mac M1 laptops

I read that the Macs with M1 chip will have some issues with Windows programs in Parallels 26 versus staying with Parallels 20. Can anyone say what those issues are and if we should still upgrade to 26 from the current 20 if we have an M1 chip? I wouldn't want to lose the only reason I have Win11 with Parallels : Quicken 2015.

My laptop specs:
MacBook Air M1, 2020
Chip Apple M1
Memory 16 GB
macOS Sequoia Version 15.6.1 (24G90)

Parallels® Desktop 20 for Mac (all updates installed up to now0
Standard Edition
Version 20.4.1 (55996)

Windows 11 Home Version 24H2 (all updates installed up to now)
Installed on 7/8/2025
OS build 26100.4946
Windows Feature Experience Pack 1000.26100.197.0