you could try compiled release of the bazukas obs-linuxbrowser.
just download and extract and copy it to ~/.config/obs-studio/plugins/.
it works for me fine in obs-studio from the version 23.x and to the current (25.0.0) on Ubuntu Studio 19.10.
Thank you very much, however, the release i cannot download because this is compiled for Linux x64 and not for ARM, so it will not work. It also needs CEF as depedency, so its very diffficult to build and will probably not work with ARM, so with this said, i cannot compile / use it :(. But thanks for your help! :)