Player misbehaves after current selected larva disappears

On the assay view, the play/pause button sometimes triggers a step forward action instead of a play.

Steps to reproduce: Select a larva, move close to the end of its track, press Play/Pause, wait until the larva disappears. The timer stops. Go back to the assay view with the Home button. Try to resume the animation pressing Play/Pause.

The unexpected behavior can be fixed by selecting another larva and pressing Play/Pause. The issue occurs on the assay view only.

Expected behavior: The larvae should be animated on a play event, not only by a single step forward.