Update: Problem might be due to using outdated browser. So, better alternative might be updating browser. See compat. matrix: https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaExpanded#browser_compatibility

It has been reported at least twice since extension was activated. At first I could not reproduce it, but after switching browser from Chromium to Firefox, I could.

It was reported that all elements were collapsed. It was possible to expand individual elements, but after reloading the page, the behaviour was the same (all elements collapsed).

Overrall, we saw 2 different problems:

1. when element was collapsed, this was not saved. Looks similar to Collapse state is not saved in user settings #1 and Collapse state is still not saved in user settings #7 and seemed to be fixed with [BUGFIX] Make sure state is stored in user settings #10
2. (this issue) all elements collapsed, not possible to change behaviour. Depends on Browser

I will create PR.

Possible solution

changing

- if (btn.ariaExpanded == 'true') {
+ if (btn.getAttribute('aria-expanded') == 'true') {

in PageModuleCollapse.js

was reported to work.

Info

Behaviour may be browser-dependant, see also

• ariaExpanded property: Stack Overflow: https://stackoverflow.com/questions/31762510/get-aria-expanded-value
• ariaExpanded property mdn Web docs: https://developer.mozilla.org/en-US/docs/Web/API/Element/ariaExpanded

Versions

• TYPO3: 11.5.38
• container: 2.3.6
• collapse: latest 1.0.0 (or latest "main")

reproduced with

• Firefox 115.12.0esr (64-bit) "Extended Support Release", Xubuntu (Linux)

Note: I usually do not use Firefox, this might be an outdated version. The other colleagues are usually under Windows using automatically updated versions.