fix(pointer): compare `x` against `x` not `y` in `isDifferentPointerPosition()`

[bawjensen]

What:

Fixing logic in isDifferentPointerPosition() where we compare y against y but we compare x also against y.

Why:

I can only imagine this is a bug.

How:

Just change x to y.

Checklist:

• N/A Documentation
• [x] Tests
• [x] Ready to be merged

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[ph-fritsche]

closing in favor of #1216