Markers snapping away from Current Time Indicator

I use timeline markers (not layer markers) a lot for a big project. It helps me sort out the different parts that I want to export individually. I love all the customisation options for the markers, so feature-wise I'd say I'm more than happy.

There is a bug that makes using the markers frustrating. When zooming in on my timeline to fine-tune the end point of a timeline marker, the end-point snaps away from the cursor. It doesn't matter if I hold SHIFT or not, when zoomed-in, it will always snap away.