It was "Invisible scrollbar" by KK YUAN

@Gwen-Dragon thanks for taking time to reply. No i havent been on Win7 for a long time. My current machine is always as up-to date as it can be. Currently Win10 Pro, version 21H1. I notice it tends to be the trend to list the spec in the signature, sorry for not doing that. If it has any bearing mine is Ryzen7 2700X 8 core / 64GB RAM.

Furthermore, i notice previous posters saying about size of a particular download, i dont think that makes any difference, as i have seem small files such as just 9MB from GitHub show this strange phenomenon.

Im sort of convinced its something to do with the Vivaldi Cookie Crumbler update, although there have been a couple of minor Vivaldi iterations since then. I will experiment with my work laptop which is a truly awful spec and still has Win8. I have not enabled the Cookie Crumbler thing on that one. But i hardly ever need to download anything on it, instead favouring my beefy desktop machine. Ill see what happens.

@gwen-dragon
some people on korean websites like naver blogs, tistory(services like bloggers) block right clicking using some plugins to prevent copy their writings.
those kind of plugins not only just blocks right clicking, also blocks dragging too.
this is kinda annoying you know

So, I turned off the user agent extension and voila! Doah....

Ursache gefunden, lag an einer Erweiterung (PiP von Google), danke fürs Mittesten und -denken 🙂

Ok, I got it.
Disabled all extensions and sending messages worked. Then I enabled one after the other and tried to send a message via the web client.
A dark Mode extension, even if it is not switched to dark mode, but only installed and activated, breaks it immediately and it gets stuck on sending message.

https://chrome.google.com/webstore/detail/dark-mode/dmghijelimhndkbmpgbldicpogfkceaj

I already uninstalled it, but I believe this was it.

@freescompany Hi, delved further into this problem and it appears that only part of the extension is causing the problem and that is the Global Privacy Control part of the extension

Oh I never suspected it was one of he Downloader extension, I will check that. I have tried disabling the ad blocker, made no difference. Vivaldi is a great browser, only issue I have was this annoying pop up message.
Thanks for he advice, will see if it gets rid of the message.

Dafür brauchen aktuelle Browser doch gar keine Erweiterung mehr.

@LonM Doh! I should of thought of that. I quickly ran it in a private window and it works. I haven't identified the extension yet but I'll work through them this evening. Thanks for the heads-up.

@Gwen-Dragon Thanks for testing it.

Presumably I got the Extension Data when I copied over the entire Default Folders to the new PC, so I'm wondering if I should do a Sync first then re-copy the folders/files or just do it now after I've already copies all the folders/files from the old computer?

Yeh, most are not a problem, but Dark reader is, if disabled everything works.

@joey1314 Not sure what you mean by "not being able to click on it". Are you able to make a screenshot of the issue?

Sometimes on multi-monitor setups the dialog will show up in the middle between the screens which is a known issue I think. But it can still be interacted with.

My browser add blocking was off, but it was reacting to ghostery. When I told ghostery to trust the site, it was back to working. Thanks

@Gwen-Dragon said in Bild-in-Bild Funktion geht nicht mehr {extension Picture in picture 1.4}:

@pinotto Duplikat des schon bestätigten Bugs: VB-78193 "HTML attribute "disablepictureinpicture" on video element breaks Picture-in-Picture button and makes it useless"

Sorry!

Vor dem Posting des Bugs habe ich lange nach der Bug-Liste gesucht, um zu überprüfen, ob das Problem bereits behandelt wird. Konnte sie aber nicht finden.
Wo kann man die laufenden und gelösten Bugs ansehen?

I have had similar problems, specifically with a website that used JavaScript to display photos. I had to reset my profile before I realized that was it. If anyone is having similar issues (photos not displaying only on certain sites), click the padlock icon in the address bar and make sure JavaScript is set to "Allow" (Site Settings).

@TbGbe said in Corrupted(?) Vivaldi's profile even in Incognito...?:

@kryllyn said in Corrupted(?) Vivaldi's profile even in Incognito...?:

in Incognito mode launched from default profile (ctrl+shift+n) results the same - page's load incorrectly.

Have you allowed any extensions to be active in Incognito mode?

Thought it's only AdBlock and Lastpass but had "I don't care about cookies" extension, after disabling it, everything works fine...
How I didn't thought of that - I feel ashamed 😳

Thank you for your help 😊

@TMich said in Unable to load Gab Social (MIME type checking error):

DuckDuckGo Privacy Essentials

I believe there were some problems reported with this extension as it changes the "browser agent".

But if you are working now, don't worry about it!

@kshipsak is a bug, someone reported and was confirmed