Still using Internet Explorer in 2021, really !?

Anyway, are you referring to the button at the bottom of account_prefs_page.php / manage_user_edit_page.php ?

If so this is a plain HTML form button without javascript so I can't think of a reason why it would not work. I don't have an IE installation to test, so you'll have to provide more information.

I know ...
I use 2 browsers. Edge for my daily use. IE to be log as Administrator on the same website, example : mantis.
That why I noticed that.

Yes, I referring to this page.

And I notice the display is good on IE and not on Edge (But it is maybe fix with this 0028080)

Example_IE.jpg (194,357 bytes)   

Example_IE.jpg (194,357 bytes)   

Example_Edge.jpg (162,103 bytes)   

Example_Edge.jpg (162,103 bytes)   

I tested on a PC at work today, and I can confirm the problem. The root cause is our use of HTML button tag's form attribute, which is not supported on IE 11.

There are at least 2 places in MantisBT where we use this construct, which is required when the submit buttons are located outside of the HTML form in the markup.
$ git grep "button.*form="

• account_prefs_inc.php:403 => since 2.25.0
• manage_config_workflow_page.php:567 => since 2.22.0

IMO it's not worth the effort to maintain compatibility with a browser that was released in 2013, and is hardly supported anymore on the Web today. So I guess it's time to turn the page, and officially mark the end of IE 11 support for us.

For your use case, I suggest that you switch to a different browser (e.g. Firefox or Chrome) for your admin session, or use a Private window (which is what I usually do myself).

I'm going to close this as "won't fix".

Oh, and about the misaligned buttons, this is indeed 0028080, please upgrade to the latest version (2.25.2 at the moment).