My experience with this:
Was using Projeqtor 10.x without any issue. Accessed from any browser on any OS. Everything worked.
Upgraded to 11.3.x. I can see a login screen, but once I login I have a blank page. Developer inspection shows me that much .js and .css files were downloaded, but what is drawn on the screen is ... blank.
Upgraded today to 11.4.1. Same experience.
On macOS 15 I've tried:
Firefox v133
Safari
Chrome
librefox
On iOS 18 I've tried:
Safari
Firefox
If I visit your demo page I can login, I get a blank page for a brief moment, then I get the expected interface.
In my efforts to debug this I have:
Completely blown away my SQL data and started from scratch (this would make me VERY sad if I had many projects in there from 10.x). No help.
Completely blown away the Projeqtor installation and reinstalled from scratch. No good.
In the developer Console I see "Unreachable code after return statement" errors (two of them), and a dojo error:
"Synchronous XMLHttpRequest on the main thread is deprecated because of its detrimental effects to the end user’s experience. For more help
xhr.spec.whatwg.org/#sync-warning"
After that I see two XHR transactions, and a final GET for the logo.ico file. After that - nothing. No activity at all.