shortcuts while woking with stacks

[Robvog]

While working with stacks I was used to use shortcuts as shift+e to expand en shift+c to collapse.
After one of the updates (I do not know exactly which one) these shortcuts do'nt work. Ctrl+arrow key neither.
Do anybody know what can be the cause?

[Mario]

Works here. No reports from other users.
Do the menu commands work or the drop-down menus when you click on the stack icon?
Which language do you use for IMatch? Which version? Operating System? Any problems reported in the log file? Did you reboot your system once?

[Robvog]

Yes, I restarted Imatch as well as Windows 10 on my system.
Version Imatch: 2019.6.2 964 bit),
dutch language or Englisch language same problem.
The menu commands are normally working, also the context menu, exept the stack-commands collapse and expand.
Open stack in Result view / viewer, Stack and Unstack are OK.   

[Mario]

Hm. Have you perhaps enabled the option to show stacked files always expanded in the File Window toolbar?

[Robvog]

Ah, you're right. I didn't know that option. It must be activated par accident...
Thanks anyway