Camera gets stuck in tilt mode

[hpinkos]

Reported by @moodragon46 in #7137

This is a fix for a bug that can be replicated using the following steps:

1. Use the middle mouse button to tilt
2. While holding the middle mouse button down, click the left mouse button
3. Release the middle mouse button.

The camera will be stuck in tilt mode until the middle mouse button is pressed and released again. The expected behaviour is that the camera will stop when the middle mouse button is released for the first time.

[hpinkos]

Opened this issue to keep track of this bug. @moodragon46 submitted a fix in #7137 but we had to revert it before the 1.51 release because it introduce this bug: #7215

[stacksparrow4]

I'll look into it.

[hpinkos]

Thanks @moodragon46 !

[chris-cooper]

Hmm, the issue auto closed based on a private PR referencing it.