V9: blocks not getting installed anymore

I don’t know what happened, I can only think of upgrading from v9.0.0 to v9.0.1, but some of my packages I’ve tested in v9.0.0, which installed and worked perfectly well, now stopped installing blocks which are part of the packages.

Anyone noticed that? Not all, but only some packages. This is really weird. The packages get installed, no errors, nothing, I can see the packages in the Dashboard, but no blocks!

When I click on Details for the package, there’s nothing there. Searching for the blocks does nothing. There are no blocks in the Block Types.

What could that be? Was there anything done in v9.0.1 in that area?

That’s actually a bug: