New update has made the extension completely useless. List of problems follows below.

Conclusion:
The fact that this has been pushed out with what cannot have been any real testing has made me regret ever having recommended lastpass to people I know. I will never recommend it again and if this is not sorted within a few days I will migrate to another service.
If Lastpass cannot test a browser extensions core functionality I don't trust them to keep my passwords secure.

use case: i have the account info saved, but it is not automatically detected by lastpass extension.
New behavior: type search term, press enter, get taken to the "all relevant" tab, which has no relevant entries, which is why I searched.
Expected behavior: when I search, show me search results or a message that nothing was found.

Use case: i have the entry for a credit card at the top of the list in the lastpass extension (by making it a favorite, as search is borked. see above). i wish to input card details to the site i am on.
new behavior: click entry which opens a new tab with the edit window of the card details. I can then manually select and copy-paste the card no and security code, while remembering the expiry and switching tabs several times to accomplish paying with my credit card.
expected behavior: input the card details to the paymet form fields

There are other problems as well. 🤡

Update: I tried to email support@lastpass.com which was listed on the extension page as the support contact and the email bounced with "554 4.3.2 mailbox busy" - great work guys... SMH

2nd update: disabling "Use improved save and fill" in advanced settings in my lastpass vault restored old behavior - thank god. still a one star review until this is resolved. also still a huge blow to my confidence in the team behind lastpass.