I’ve seen this on MacOS too, but only when trying to load certain artist pages. Searching for an artist and trying to load his page can occasionally freeze or crash the Roon app.
On April 14th I opened a support thread on this problem, without reply by @support. But I just now discovered that a reply by another user who reported his own problem is marked as solution… that’s probably why Roon support wouldn’t take on my support request. Is it possible for one of the @moderators to please reopen my thread?