Logging into preview.livecode.com with Firefox 131.0-1 on Ubuntu 24.0.1 LTS accepts username and password and then just displays a blank screen. Hitting refresh in the browser ask is if you want to ‘leave this page’ and if you select yes it then loads the preview.livecode.com UI page correctly. Navigation and selecting objects, adding controls etc is a bit iffy & slow. Also it appears I need to right click stack or control (ok any object) when in project browser view and then select property inspector to get the property pane to display as well (double click doesn’t seem to work).
Logging into to LCC Web using MS Edge on macOS Sequoia 15.0 also gives a blank screen for me. Hitting the Refresh button in the browser prompts to Reload the page, which when completed displays the UI (My Projects screen)