Hi

We are experiencing the exact same, confirmed behaviour on Sage 300 2021 PU2 and Sage 300 2020.

Did you find any fixes/workarounds?

No solution yet...

I have encouraged the users to stay in the batch and post from there, otherwise they have to log off and on again.

Hi

We are experiencing the same. Any news on a fix/resolution yet?

My client experience the same thing in GL module and AR as well. Any solution for this?

(using Sage 300 2021 PU2 Web Screen)

Our client has this on GL batch. One user enters the batch and when the other user goes to post it says it is locked by another user. Sometimes they have to wait nearly an hour. 

any solutions. 

I know your reply was six months ago but was wondering if you came up with a solution or work-around for this?  I'm currently seeing the same issue at a site and trying to get to the bottom of it.  Do you find clicking the circular refresh arrow at the bottom of Batch Listings helps clear the lock?