Bryntum Support Forums

The top header is set: https://imgur.com/NXxCBpF

But depending on view preset and timeline, the header can be moved out of visible area: https://i.imgur.com/la2D7ur.png

Is it possible to have the header always visible, by fixing it in the leftmost position if the cell area is wide enough?
Like this: https://i.imgur.com/XzBeO2N.png

You are able to customize the header in your own way. Here is the timeaxis sample, which is going to help you to catch the idea.

Hello Antarctica. Currently this is not supported.

However you could try to update the label when the header of the scheduler is scrolled. You can set a cls on the tick cells as shown in the timeaxis example. After scroll just query for the first visible cell and update it's inner content.