Problems with highlighting and text deletion

[kovilo]

I have just started using and am very grateful for the incremental reading add on (v 4.10.3) on ANKI (Version 2.1.20 [47a1bf8b]
Python 3.8.0 Qt 5.14.1 PyQt 5.14.1) for Windows 10 but find that I can't use either the highlight-"h" feature or the delete content-"z" feature once I have selected a text. I open up my IR deck, see my IR content (a Wikipedia article), then select a section of text and press "h" and ... nothing. The same when I press "z". I have checked the highlighting colors option and the highlight should turn yellow background but nothing changes. The undo-"u" and extract-"x" shortcuts do what they are supposed to do. Is there something I'm missing? Thank you :)

[sasank89]

I also have the same problem with highlighting. The "delete content" feature seems to work fine. My system details

Version 2.1.26 (arch-linux-2.1.26-1)
Python 3.8.6 Qt 5.15.1 PyQt 5.15.1

I am a beginner to this process of coding/debugging. If anyone could guide me through this process, I would be glad to try and resolve this issue as well. Thank you in advance.