Flash Projector - Step forward / backward does not work?

In the control bar of the flash projector, it says that you are capable of stepping forward or back a frame by using this key shortcut: CTRL + -> (or <-)

However, nothing happens.

This function used to work correctly in a much older flash player (Macromedia Flash 8 projector), but ever since then no version seems to have this fully working.

This has been mentioned back in 2012, https://forums.adobe.com/message/4226279#4226279

but there is no indication that it has been resolved.

Is there a method to fix this?

Thanks!