In MC 5.0.3, if you scroll the timeline cursor over a clip with a motion effect on it, once the cursor hits the end point of that effected clip, FSP will switch off.

This means if you have a timeline with any motion effects on it, FSP will annoyingly disappear whenever you pass by a clip with a motion effect (including pre-rendered ones). You then need to switch it back on manually.

The problem doesn't occur when simply playing a clip (thankfully).