Some days/weeks ago I've started noticing that the indexer has a bug where it gets stuck indexing the same blocks over and over.
In the following image you can see the indexer reaching slot 4987730 and then starting to index from 4987692, over and over:

This causes lots of useless requests to the rpc node and the website gets stuck (no new blocks are indexer)
This looks like a regression to me, as I hadn't seen this bug before.