v8.10 is often unresponsive

Yesterday I was rotating passwords using an iPad and saw this pretty often (v8.10.4). Restarting the app or cycling through menu's got it working again. I was using the 1Password app (1P) along with the Safari extension.

1. Open 1P, find record, and open associated website.
2. On website, find location to change password, change the password, and update the record when prompted by 1P.
3. Logout of website and return to 1P to repeat #1 (verify the update was working).

I was cycling through passwords pretty quickly so can't say definitively there is a pattern but saw the following on more than 1 occasion:

1. The password was changed in the extension (dropdown) but not reflected in the 1P app
2. In 1P app the vault list hung with spinner (like description of this incident).

I'll try to narrow down the steps. Maybe some interaction between the extension and the app (wild guess).