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Apple Releases Fifth Beta of macOS Big Sur to Developers
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Theres a fix for this. From parallels know issues note number 6
KB Parallels: Parallels Desktop for Mac compatibility with macOS 11 Big Sur – Known and Resolved Issues
Click to subscribe to this article to be immediately notified on us fixing these few remaining issues.
kb.parallels.com
there's issues ... stay away for the time being until the notes explicitly state its resolved issues associated with the 2020 iMac
If by issues you mean not possible to install at all AND it will bork some of your firmware settings while trying to do so, sure there are issues.
I guess that is why it's a beta. If you don't stress the OS with developers, the general public blow a fuse, and Apple is Microsoft all over again.
I *am* a Developer and the beta 5 (which is the same as the current PUBLIC beta) has forced me to put development on hold for a few weeks. I've sent several reports to Apple about them. It's frustrating because I need to be running Big Sur to ensure all my macOS App functionality is working - you can't 'simulate' it in Catalina like you can with any iOS/ipadOS device.
I'm also unable to use my new development machine as it's not supported, which would have been nice to know in advance as I didn't really need to order it yet! So I sit and wait & twiddle my thumbs.
Personally, I don't think public betas should exist at all. I think it does more harm than good in the long run, especially as most people complain loudly without actually sending a bug report to Apple which is the whole point of them. :-/
I'm in 2 minds about that.
On one hand I agree. Developers are far better placed to deal with problems with betas. They have done that for decades. Public beta testers mostly don't have that expertise or experience to deal with it. Some public beta testers may be able to but I reckon most don't. So it's a bit of a gamble on apple's part and on the public beta testers part.
On the other hand opening betas up to the public gives apple many more bug reports (despite, as you say, that some don't bother to send such reports when they really should). Everybody's computer is unique - maybe not when brand new - but once hundreds of apps get installed - they become unique. What might go wrong on my computer might not go wrong on somebody else's - who have the same model. So I kind of understand why apple opened betas up to the public. As far as bug reports go I think it is a good thing.
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Developers generally are focused on finding bugs in there own apps, and with the thousands of apps out there, not all will get tested, and the overall OS experience will often be overlooked by developers. Take MKBHD. He's not a developer, but has already spent time feeding back issues that the public will experience. The OS has many customer genre's, and it's trying to cater for a good experience for all, free of charge too.
Where's that famous beta 6? Safari always surprising by closing itself from time to time just because it's tired of your browsing haha