Camera scrolling actions are jarring / non-functional on certain browsers

[Zemanzo]

Expected behavior
Free camera: The moving speed of the camera should gradually change whilst using the mousewheel.
Tracking camera: The zoom level should change whilst using the mousewheel.

Actual behavior
Free camera: The moving speed of the camera changes very quickly, resulting in a loss of fine control.
Tracking camera: The zoom level does not change whatsoever.

Reproduction steps for free camera

1. Select the free camera setting.
2. Click and hold on the viewport.
3. Use WASD to move around, and start scrolling.
4. See jarring changes in movement speed.

Reproduction steps for tracking camera

1. Select the tracking camera setting.
2. Add a marble and start tracking it.
3. Scroll whilst having the cursor over the viewport.
4. Observe no zoom level changes.

Platform
OS: Windows 10
Browser version: Google Chrome v78.0.3904.108
Build version: 1.3.1