Line number digits obscured when not using system font

[benganis]

Hello,

In Meld for OSX version 3.19.0 (r1), I have the following problem.

To describe the behavior, let me number the following: (1) Preferences > Editor > Font > Use the system fixed width font (2) Preferences > Editor > Display > Show line numbers

When (1) and (2) are both selected, I can see line numbers properly, even for large files with thousands of lines.

But when (1) is not selected, (2) is selected, and I choose a larger font (say Monospace 14), there is a problem where I can only see three digits of the line numbers. So in this case, I can't see line numbers properly when comparing files with greater than 1000 lines. The width of the line number columns need to be adjusted, which doesn't appear to be possible on the user side.

This behavior did not occur in the previous build, 3.16.0.

Thanks, Ben