Why pasting images from clipboard works only on some apps?

[MarianoOca]

Taking a screenshot or using smart select ads a copy of the image taken to the clipboard. However, when I try to paste it on Google Docs app I get the following message:

Can't add images to Docs through clipboard or Samsung Keyboard

The same happens on docs in Brave browser, and I saw another post complaining about the same prblem on facebook app. However, I can seamlessly paste images from the clipboard on Samsung Notes and WhatsApp.

Workaround: I found that saving the image, then going to gallery > image > ... > Copy to clipboard, and then pasting it on the document will work (and in the browser too). Although this is not ideal at all.

This error showed up consistently in my both samsung devices:
Galaxy Tab S6 Lite: SM-P620, Android 14, One UI 6.1
Galaxy S20: SM-G90F, Android 13, One UI 5.1

[Robin999]

I'm still getting "Can't add images to docs through...." even when I've copied to clipboard. What am I doing wrong? Using TabS9U

Update: I can do it if I long press on a blank part of the doc and tap 'paste'. Can't do it when tapping the small pic insert (see screenshot)