When you set the keyboard shortcut through the add-on (Even Ctrl+R) it doesn't matter what you have toggled off for selective remove formatting
Temporary solution:
"editor remove format": "<nop>",
set it to <nop> and the original Ctrl+R will be sensitive to what you have toggled off
https://forums.ankiweb.net/t/remove-formatting-issues-shortcut-ctrl-r/25019/6
Check out this for more details
When you set the keyboard shortcut through the add-on (Even Ctrl+R) it doesn't matter what you have toggled off for selective remove formatting Temporary solution: "editor remove format": "
<nop>", set it to<nop>and the original Ctrl+R will be sensitive to what you have toggled off