Keyframe Insert Issue in Timeline

Keyframe rotation value is not applied correctly in the timeline

In Qt Design Studio 4.7.0, inserting a keyframe in the timeline does not apply the correct rotation value.

Moving the cursor in the timeline does not show the animation based on the properties.  
The transition from -160° to 160° is not rendered in the timeline.

Step)

-Create an animation where the rotation changes from -160° to 160°.
-Insert keyframes at the desired positions.
-After inserting the keyframes, the value remains -160° instead of changing to 160°.
-In the Code panel, the rotation value is also -160°. Manually removing the - sign in the Code panel updates the code, but the actual rotation does not change to 160°.

Expected Result)
After inserting the keyframe, the rotation should change to 160° as expected.

Actual Result)
Instead of changing to 160°, the rotation stays at -160°.

I’ve attached a video showing the issue.
Is this a bug, or am I missing something?