Editing Decimal Values in Transform Fields Causes Introduction of Negative

[tpal-1]

Summary

Manually editing the fields next to the sliders in the transform module in local reference frame causes the introduction of an unexpected negative when editing the decimal values. Seems to be an issue between the local mode transform and the code that manages the number of decimal places displayed. See: https://discourse.slicer.org/t/manually-adjusting-transform-applied-object-seems-to-jump-around-matrixes-not-edited-as-expected/34086

Steps to reproduce

• Load MRHead, create and apply linear transform to it
• Switch to local transformation mode
• Click left of the decimal point in the LR translation slicer text box and type 1 => head moves to patient right, upper right element of matrix is 1
• Use arrow to move to the right of the decimal point and type 5 => head moves to patient left, upper right element is -1.5
• Type more 5s into and the matrix element gets more and more negative
• Setting value back to 0 results in a non-identity matrix

Environment

• Slicer version: Slicer-5.6.1 (also happens on 5.2.2; notably known to NOT happen in 4.11)
• Operating system: Mac OS Monterey 12.7.1