When summoning "Extension Manager" and pressing "Auf Updates prüfen" ("Check for Updates"), Extension Manager no longer reacts to User Interactions like clicking on "Schließen" ("Close") in it's dialog.
Also, I see that LO's memory consumption then keeps growing until eventually it takes all the available memory, bringing down the Computer as a result.
The only way I have found to stop this is force-quitting LO from OS X's Activity monitor.
The same problem occurs when I double-click an OXT file in the Finder (I tested this with LanguageTool-3.9.oxt) -> LO opens in the Extension Manager, displays "Füge LanguageTool-3.9.oxt hinzu" ("Add LanguageTool-3.9.oxt"), then the Extension Manager locks up & consumes memory as described above).
Steps to Reproduce:
1. Open LO
2. Create new Text document
3. Open Extension Manager
4. Click "Check for Updates"
Extension Manager locks up, LO memory footprint keeps growing until OS X is out of memory
Extension manager should show new/updates extensions.
User Profile Reset: Yes
I have experienced this issue also on previous 5.4.x versions of LO.
CPU-Threads: 8; BS: Mac OS X 10.11.6; UI-Render: Standard;
Gebietsschema: de-AT (de_AT.UTF-8); Calc: group
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:57.0) Gecko/20100101 Firefox/57.0
*** This bug has been marked as a duplicate of bug 112414 ***