[Bug]: Adjust Grid tool inconsistent offsets

[kwvanderlinde]

Describe the Bug

The offsets set by the Adjust Grid tool feel very arbitrary as a user. There's a number of angles to this:

1. When panning, the offset is modified to a negative number constrained to the grid size. With this method I am unable to set a positive offset or any offset greater than the grid size.
2. When scrolling to change the grid size, the offset is also changed to keep the mouse's grid cell constant. Unlike in (1) this tends to result in large negative offsets. Side note: grid rendering breaks with these large offsets
3. When typing an offset manually, I can set it to whatever number I want: positive or negative, large or small.

To Reproduce

1. Open any map
2. Open the Adjust Grid tool (Map > Adjust Grid)
3. Hold down the left mouse button and drag the map. Watch the offset cycle between 0 and the negative grid size. Release the mouse button.
4. Move the mouse to the bottom-right corner of the map, then scroll down. Watch the offset quickly grow into the negative thousands, and grid lines start disappearing.
5. Type in a large positive offset. Watch the grid shift accordingly, and the tool will not force it to be negative or constrained to the grid size.

Expected Behaviour

There should be no constraints on the offset. Even though it would have no difference in behaviour (save some rendering bugs), it is easier to understand as a user if dragging the grid consistently rasied or lowered the offset depending on the direction.

Screenshots

No response

MapTool Info

1.13.2

Desktop

Linux Mint 21.3

Additional Context

No response