Issue with call hangup in inbound call

[osib]

I have 2 Ingroup setup and allowed Inbound and Blended in campaign. The inbound call comes fine in both Ingroup but agent cannot hang up the customer as Hangup Customer button is inactive in one Ingroup whereas other one is fine.
The agent have to wait till customer hangup the call.

Has anyone faced this issue?

Please help

Thanks
Osib

[osib]

Issue resolved. It was a browser issue on IE