You'll really want to show more context or provide more information. I don't know what online bank it is and I also don't know whose three dots those are. It could be firefox's dots or the website's dots. And I also don't know whose website anyway.

Could you show some images (with important information blurred out)?

Here's one way: On windows, an easy way is to use the snipping tool. (Windows key > type in snipping tool) or (Windows key + shift + S = snipping tool) You can also change your settings to make print screen open snipping tool, just search the keywords and it should show up.

Does it still happen in Troubleshoot Mode?