Cache details page: Entry is created no matter that error message was shown

There are 2 indexed caches created with same indexing entity and filesystem storage cache1 and cache2.

Then I am putting data to cache1. The entry is entered properly.

Then I am trying to put data to cache2. I am getting error (see screenshot 1). Seems that entry is not putted into cache. But when I am getting the list of entries the entry is there (see screenshot 2).

Regarding creating caches with same indexing entity and filesystem (with same path), I had a chat with Fabio, see here.]

ISPN-14109 is created as a result. Or we just need to specify the path to filesystem storage for which we don't have possibility in our wizard, only manually edit the cache config before create. But anyway, the create proceeds no matter that error was shown.