Yes it's done that since TANE first appeared, confused me when I first noticed it.
CTDs? Not had any here, probably caused by a bad asset that isn't obviously faulty, might get a clue from looking at the log, under Developer and look for anything that is red.
As for actual faulty assets If not easily fixable or revert to original doesn't fix them I delete and move on.
Alternatively anything in yellow that appears to be trying to load over and over again there are a couple of items that don't actually exist but others may be a cause of a problem.