15b2: Clear in and out command doesn't work in timeline

- Select timeline
- Set In and Out point
- Press Option-X or Menu -> Mark -> Clear In and Out
- Nothing happens, In and Out point still set ...
The 'Clear In' and 'Clear Out' commands do work in the timeline.
The 'Clear In and Out' command does work in the source viewer.
DaVinci Resolve Studio 15 public beta2
MacOS 10.12.6
Nvidian 1080TI