Style error after clean installation on Azure PaaS

Hello all

After clean installation of latest version of Verint community i got some issues with page styles. 
I think my issue is similar to https://community.telligent.com/community/11/f/ask-the-community/1146905/getting-refused-to-apply-style-after-browsing-site-first-time but there was no answer what caused it. 

Can you please advice, what configurations to check, or on which logs to look on? cause in web app eventlog no errors