I know my previous post has been closed because this issue was not only related to beta, but recently I have tried the workaround posted under the link:
where you change the option for how Unity is handling the default inspector UI drawing to the old ways, was working for Unity 2023.1b4 but it is not working since 2023.1b5
So I am writing here again, just in case it is specific to 2023.1b5 version change so Unity can check it out.
Does anyone having the same issue as me using 2023.1b5?
Just in case to add detail to the actual problem,
When you have debug mode on for inspector, you used to be able to change script on the component but it was disabled by default for Unity 2023, then I found work around by using option in Unity Project Setting to let Unity use old way to draw GUI and that work around was working till Unity 2023.1b4 but even that work around seems to not work for Unity 2023.1b5