Cosmos Browser freeze and VFB doesn't reload correctly

[lollolo]

Hi I'm having an issue with Cosmos and VFB.
When I start a session, everything is working as expected. VBF and Cosmos.
But after some time, can't 100% tell when exactly, it happens after I started using IR or production rendering, Cosmos freezes and VFB doesn't correctly refresh the window.
For VFB I can just manually change the size of the VFB window as a workaround, but Cosmos freezes until I restart C4D.

My problem with VFB is that when I click "hide tools sidebar," the VFB doesn't update correctly. The stats go away, but the gray frame stays until I change the size of the window.
Cosmos: It freezes completely, I can't click anywhere, doesn't load, only way to get it working again is to restart C4D.

Corona 13 Jun 11
C4D R20
Win 10

Does anybody have an idea, how to resolve this? What could be the reasons for the freeze?
Any help is welcome. :)

[TomG]

My first thought is that R20 came out in 2018, which is 7 years ago now and so very old. This could well play a part in the functioning of things developed in the last few years, like the Cosmos browser and the VFB 2. Have you been able to test with a more recent version of C4D?

[lollolo]

Yes, this is what I also thought. Otherwise, there would be other reports too, so very likely, that it is an issue for older versions only.
No, didn't check with newer version, because I'm stuck with R20 for some time (don't really want the newer, subscriptions sucks, lol)

Also not a big issue, can live with that. Just to be sure: I can't download models from browser, right? I can see the library online, but downloading is only possibly in C4D, correct?