Cannot Listen In on Phone Calls, Even With Rights/Permissions Enabled

[cambrio]

We updated to 3CX 18.0 (Build 461), and have found that some users in our call queues cannot be listened in on, usually "newer" users. All users in those phone queues have the rights to barge in, listen, and whisper checked as a default for our company. It does not matter if they use the softphone or a physical phone. All users experiencing this issue, where they cannot listen in on newer employees, are managers of the queues (can log each other out of queue). Elevating their permissions to Manager instead of User/DEFAULT dropdown sometimes expands permissions, sometimes there is no effect. Side by side comparisons of permissions with people who aren't experiencing the "listen in" problem are mirrored on all information I could find. I have re-sent them the welcome email, with no effect when they run it. The issue temporarily goes away if I email myself their welcome email, configure my account to be theirs, test successfully, and then re-send them the welcome email with the config file, but the issue seems to come back after a few days. Both users that cannot be listened in on have a Dell Precision 5540, however other members of the queue have the same model of laptop and they can be listened in on. I have attached a comparison of the options of a user that can't be listened to, vs a user that can, from a person in the same queue as the affected numbers/accounts.