Boolean conditions are not working in my desktop version of Zotero: only the "AND" operator seems to function, regardless of whether I select "All" or "Any". Have you encountered the same problem? (Zotero 7.0.2 (64-bit))

In 7.0.2, when I add a keyword to broaden the search, with "any" in option it behaves like an AND condition (all). The number of results goes from 138 to 36.

https://s3.amazonaws.com/zotero.org/images/forums/u6096777/qrfjvatzjw0fq4kgzia1.jpg

https://s3.amazonaws.com/zotero.org/images/forums/u6096777/rxzlejnsh5mk4boww8tw.jpg

I tried using the "all" condition, in case it was a translation issue from English to French, but the result is the same (36 results).

Here is a third and final test to confirm that the issue appears to be related to searching across all fields (hopefully this helps):
Search 1: term 1 in Title (68 results)
Search 2: term 1 in Abstract (71 results)
Combining searches 1 and 2 using the OR operator yields the expected results (106 results)
https://s3.amazonaws.com/zotero.org/images/forums/u6096777/ualw92k7aarpcf01v2lr.jpg
https://s3.amazonaws.com/zotero.org/images/forums/u6096777/kx7uhbkiw68hbhuhvt0d.jpg
https://s3.amazonaws.com/zotero.org/images/forums/u6096777/9ab44etlagshv2sz5xrk.jpg

(This works correctly for me in the current beta, FWIW)

Hello, it works in 7.0.24. Thanks. Have a nice journey.
https://s3.amazonaws.com/zotero.org/images/forums/u6096777/7d4cyysr6un70b69ect6.jpg
https://s3.amazonaws.com/zotero.org/images/forums/u6096777/wwb9rivw832kf561gw83.jpg