Matomo issues when installed in a subpath #12562

I am experiencing issues after installing matomo in a subpath. I am running matomo 3.3.0 behind a reverse proxy and I can access the site and most of it works just fine except for some images, such as default and custom logos (not adding the subpath to the src url) and redirecting to root domain after successful login or authentication with apereo CAS SSO.
I open this issue as required in #7898

Could you explain your problems a bit more detailed?
Is "only" the subpath missing in the image urls? Or anything else?
Which OS are you running Matomo on? which PHP version are you using?

If Matomo is behind a reverse proxy and installed in a sub-path

please check this faq: https://matomo.org/faq/how-to-install/faq_98/ (second section)