Whenever I select all range of track with Ctrl+A or mouse drag, Audacity 3.0.0 was freeze.
Now I downgraded to 2.4.0 for workaround.
How long is the show and how many tracks do you have?
Koz
I have only 1 track and the long is few seconds.
From additional check, partial selection in track range does not occur freeze. All select with ctrl+A occurs freeze.
What language is your Windows?
There were some issues running 3.0.0 with certain oriental languages. These have been addressed and corrections for most or all of these issues will be included in the 3.0.2 release hoped for around the end of this month.