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Pasting in FireFox and screenshots not working - FireFox developer 88.0b2 (64bit) on Win10 Pro x64

  • 5 respostas
  • 1 has this problem
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  • Last reply by Fritex

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Recently, I think it was yesterday when I updated FireFox developer to 88.0b2 (64bit) on my OS Windows 10 Pro (x64) 22H2 19042.870.

Firstly I noticed "take screenshot" option dissapeared from "3 dots" on the URL bar. Secondly, the "paste" (right click or CTRL + V) stopped working.

I cannot paste text neither from my Notepad or some Text Editor as usuall to some input field or textarea on some Website.

I can copy text from some input field of an Website, but cannot paste the text inside it from a Windows Explorer or whatever.

What is that wrong with FireFox stable/unstable versions?

I've had problems on "normal" FireFox, now I got them either on "developer". I really like this browser, but more and more it seems I would need to switch to some other just because.

Recently, I think it was yesterday when I updated FireFox developer to 88.0b2 (64bit) on my OS Windows 10 Pro (x64) 22H2 19042.870. Firstly I noticed "take screenshot" option dissapeared from "3 dots" on the URL bar. Secondly, the "paste" (right click or CTRL + V) stopped working. I cannot paste text neither from my Notepad or some Text Editor as usuall to some input field or textarea on some Website. I can copy text from some input field of an Website, but cannot paste the text inside it from a Windows Explorer or whatever. What is that wrong with FireFox stable/unstable versions? I've had problems on "normal" FireFox, now I got them either on "developer". I really like this browser, but more and more it seems I would need to switch to some other just because.

Chosen solution

Okay, fixed - Eset NOD32 Internet Security -> Web access -> Banking & Payment protection - I have had an option "Protect all Web browsers" enabled with "all extensions".

When I turned it to "diasbled", copy-paste of large chunk text as before is working back again.

This option prevented pasting large text into textarea of my Firefox web browser.

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All Replies (5)

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Especially when pasting huage text like 400 lines of HTML/CSS, 14.000 characters into textarea field.

Why this happens?

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I managed to get now to Default FirFox, screenshot works, but again, a lot of text pasting into input textarea is not working.

Cannot work as a Web developer -.-

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Is the Windows 10 error somewhere? Registry or what?

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Chosen Solution

Okay, fixed - Eset NOD32 Internet Security -> Web access -> Banking & Payment protection - I have had an option "Protect all Web browsers" enabled with "all extensions".

When I turned it to "diasbled", copy-paste of large chunk text as before is working back again.

This option prevented pasting large text into textarea of my Firefox web browser.

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Also, when I got back to Normal FireFox from my FireFox Developer, same extenstions, updated to

Firefox 87.0 (x64) - Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:87.0) Gecko/20100101 Firefox/87.0 Windows_NT 10.0 19042

Screenshot are back on "3 dots".