Steps to reproduce:

• open/create Qt Quick Application, profile it to get some valid information
• switch to Timeline
• on the bottom (overview) part make indicator of the displayed range small
• place this indicator to a part of the timeline where some events are displayed
• grab the right handle of the indicator to resize it and make it bigger

Expected behavior:

• event indicators change on the fly - as the grid of the timeline does

Current behavior:

• event indicators keep the original size, you have to force a repaint of the timeline to get the right sizes