Fails to Render Bootstrap Module Accordions

Well it works for me. I mean there is clearly something wrong on the screenshots that you posted. But i tried it on a test drupal install and it looks fine. Something else must be wrong. Give me more info like OS, Browser, or have you tried it on another drupal install. Check my screenshot:

Downloaded and enabled the font-awesome module and still works perfectly. Can you please try the Adminimal Theme on a "vanilla" drupal site. Just add a new drupal site and install only the adminimal theme and the bootstap thing. Then try again and tell me if it works...

Well, its working fine for me. I downlaoded the latest stable aquia dev desktop, installed it with the default settings. Then installed and enabled Adminimal, Bootstrap and jQuery update. And it was working as expected.Check out the screenshot (i even tried it in Internet Explorer and its fine)
https://drupal.org/files/issues/adminimal-aquiadev-is-working.png

Please try on a live "production ready" server and report back.

I have the same problem on the Entity Translation page of my site. The problem seems to be with nested fieldsets. On most admin pages that use vertical tabs, each vertical tab pane is a fieldset that contains normal form items like text fields and the like. On the Entity Translation page however, each vertical tab pane is a fieldset that contains more fieldsets, and those nested fieldsets are collapsed by default and their legends are "display: none", so they are invisible.

By the way, I really love this theme and hope to switch to it for all my sites, so it would be great to get a fix for this soon. Thanks!

Same problem here.

Fieldsets not showing in admin -> Appearance -> Theme options -> Bootstrap3 options

Applying this to .../adminimal_theme/css/vertical-tabs.css fix the problem:

div.vertical-tabs .vertical-tabs-panes legend  {
    display: inherit !important;
}

I've applied the fix from "amorales @ drupal.org.es" in the latest dev version.

div.vertical-tabs .vertical-tabs-panes legend  {
    display: inherit !important;
}

Please update and try it out.
Thank you all for using Adminimal, reporting issues and helping fixing them. I really appreciate it!

Thank you all! Soon i will push it to the stable release.

It's still not quite right for Entity Translation. The fieldset legend is only half visible, as shown in the screenshot. Here's what I did to fix it:

In styles.css add

html.js fieldset.collapsed {
  height: auto;
}

And in vertical-tabs.css at line 17 I added div.vertical-tabs fieldset fieldset to end up with:

div.vertical-tabs fieldset fieldset,
div.vertical-tabs .field-group-tab fieldset {
  border: solid 1px #ddd;
  border-top: 3px solid #0074BD;
  padding: 12px;
  margin: 18px 0;
}

Pffffff... i think i finally found why the fieldsets were messed up. In line 11 there was this code

div.vertical-tabs fieldset {
  border: 0;
  padding: 0;
  margin: 0;
}

and that was also in the original Seven theme. (Adminimal is based on Seven) So i removed these lines and it now seems to be looking good. Need to do some more testing before pushing it into the stable version. Thanks everybody! Check the screenshot after applying the fix...
View Screenshot or grab the latest dev version and give it a try ;)

The latest dev is perfect. Thank you!