I have tested this item successfully on efdeb8e
I can confirm that the patch fixes the issue, now the radio buttons in /installation/ are back to normal:

the buttons after the patch:

Please also update the old copyrights: https://github.com/joomla/joomla-cms/pull/4022/files#diff-1a484eca2b31420444083dbca7198a81R6

I have tested this item successfully on efdeb8e
Works good here.

I have tested this item unsuccessfully on efdeb8e
This seems to fix the radio buttons for installation. However, #4022 has broken all radio buttons in backend. These buttons are not fixed for me with this PR.

RTC.

Lets do the codestyle and copyright updates do in a different PR there are more changes we need to do ;)

The buttons are not selected with a default value. Additionally, when selecting a button, it is marked blue (primary) instead of green or red. And it is not possible to select the opposite value once you have selected a radio button.

back to pending. maybe because of the layout overrides for isis and protostar @okonomiyaki3000 ?

@Harmageddon can you try it with renamed folder administrator/templates/isis/html/layouts/joomla/fields works for me for the backend (with this patch applyed as well)

same for frontend. /templates/protostar/html/layouts/joomla/fields @okonomiyaki3000 do you know why you add thes overrides there?

That's right, @zero-24. Without the overrides, it works.

@okonomiyaki3000 here is a PR ( okonomiyaki3000#5) that fix all issues.

How to test (if my PR is merged into this)

• install staging from this PR: https://github.com/okonomiyaki3000/joomla-cms/archive/fix-radiobuttons.zip (we need to wait for the merge of my pr above)
• see the installation work (radio buttons)
• go to the backend e.g. the global config see the radio buttons works as bevor
• go to frontend (e.g. site-settings) and see the radio also works there.
• apply the following code to ( plugins/user/profile/profiles/profile.xml)

<field type="checkboxes" name="somefield" label="Select Some Stuff">
   <option value="a" checked="true">A</option>
   <option value="b">B</option>
   <option value="c">C</option>
</field>

• enable profiel plugin
• see the profile in backend --> works
• see the profile in frontend --> works

Thanks

@zero-24 This override template wraps the input tag inside of the label tag because that's the Bootstrap way. Of course, that applies to radio buttons that are meant to be rendered as radio buttons. To achieve the toggled button effect, Bootstrap provides a different solution using the button tag. I suppose this override should be removed because the built-in Joomla templates are not really using Bootstrap in the standard way. That's unfortunate because it means there's not really an option of using normal radio buttons.

See okonomiyaki3000#5 that removes the overrides ????

This PR has received new commits.

CC: @Harmageddon, @javigomez, @zero-24

Alright, let's do that then. I hope future templates using Bootstrap 3 (or 4?) will work in a more standard way though.

I have tested this item successfully on cbb29cc
Thanks for the PR! Applied the patch and the buttons are back again! Also tested the installation an this patch works.
Hopefully this PS will be added soon!

I have tested this item successfully on cbb29cc
Patch works! Thank for the pr.

Thanks to the testers and @okonomiyaki3000 -> RTC

@RickR2H

Hopefully this PS will be added soon!

Nothing is / was broken in any stable release. Just the staging branch had this problem ;)

@zero-24 Glad to hear that ;)