Timeline of elements

[default372161393xsnid]

Hi, I am not able to edit the time of an element imported from my library. I can not change when the element appears or disappears, it just extends on the whole slide.

[Stanley351211278w6m]

Same here.

[implicad52287396]

Same, and i've tried to open older files and they are as blocked in the same way. 

[gabrielsotoe]

Same here. When dragging the side of the element in the timeline to set where it appears and dissapears, it keeps jumping back and extending to the whole slide. Happening in old files as well.

Help!