I have the same problem/change with Ctrl-Shift-V, Paste and Match Style
There changed when I upgraded to Windows Desktop version 18.104.22.16825 (305825) Public (CE Build ce-1.28.2184).
Previously I could copy from a Webpage, Jira text, Word, etc..., and use Paste and Match Style and get just the text without any formatting
Paste (Ctrl-V) would attempt to replicate the source text format
Paste and Match Style (Ctrl-Shift-V) would paste text only - which is both expected and preferred for this option IMHO.
Now they both seem to behave the same.
Per Help => Release Notes
Release Notes for Windows version 6.7
Fixes and Improvements
Fixed paste + match style behavior where not all content was being pasted as expected
Notice I used that same keystroke Ctrl-Shift-V to paste that text above into my Windows Chrome browser.