System and IINA version:

• macOS Monterey 12.6.1
• IINA 1.3.1

Expected behavior:
Given mpv Default shortcuts are selected and using "<<", ">>" buttons to increase/decrease speed on screen, when typing Backspace to get back to 1.00 speed, the speed is actualized on the OSC.

Actual behavior:
Given mpv Default shortcuts are selected and using "<<", ">>" buttons to increase/decrease speed on screen, when typing Backspace to get back to 1.00 speed, the speed is not actualized on the OSC and remains as previously.

Step 1: clicking on "<<" to reduce speed to 0.50

Step 2: typing in "backspace" key, so the speed is back to 1.00, but still displayed 0.50 on the OSC ("Vitesse" means "Speed" in French):