Yes. Seeing similar. It seems to be links that have special characters that cause issues. Special date formatting, accents, degree symbols, etc. If you hit F12 and look at the debugging, you might see a JS error: undefined entity. In my case, I can reproduce it at will with the degree symbol (°)
The PTAC and HVAC links will hang every time.
Many are reporting it, unfortunately in different threads: BasicUI: Warnings in Log