timezone issue with the schedulertable in Meeting edit

Has anyone faced the issue that the schedulertable when you edit a meeting does not show the meeting in the proper timezone?

My timezone is set to GMT +1, when saving a meeting all start and end time are correct, alerts are also coming up correct, calendar also look ok. The only place where the meeting does not show correct is the schedulertable where the meeting is edited. Here the meeting comes up as GMT +2.

The meeting shown on the screenshot is at 1200-1300 but shown as starting 1300-1400 on the scheduler.

as if the scheduler would think that the timestamp that is already converted to GMT+1 is still at GMT hence converting again, causing the final timestamp to be in GMT+2 ?

Any idea how to fix this? I ma using Suitecrm 7.8.3