Thank you for your efforts! Today I didn’t hear any drop-outs, so I guess there was not much to find in the logs. But I listened to music today for only a couple of hours in the evening, maybe too little for the bug to appear. (I had listened to music for several hours on the days where the bug/drop-outs happened.)
I don’t see any moving circle next to the bookmarks. (I think the analysis was already finished within a dozen hours after updating to Roon 1.5, i.e. probably done within the first day or two, but I don’t know for sure.)
I will revive this thread when/if the problem appears again in the coming days.