Tag admin bug

Hello Gents,
I have the following issue DT9 (ghidbeauty.ro):
– user add listing https://www.ghidbeauty.ro/listing/testing-123/
– enters tag (cocacola, cinema, holistic) – site search responds correctly searching by tag returns listing
– admin edit listing adding tag – ‘pescuit’ – listing not responding to pescuit search
– edit via user member interface and simply save – keyword function restored, listing returned to search pescuit
– tring again – with kw – “ombre” same behaviour.

Searching for ombre – returns no value. But clicking on tag link – works. Kw displayed in page but site search not responding.

Is there an bug in tag editing from admin? Can you please investigate? This is an unexpected behavious surely.