Same width of line contour results in different display

Question

In Inkscape 0.92.4 (2019-01-14), I have some green lines. They all have the same contour properties:

But they result in a different displayed width:

Note that the last green line is thinner than the others.

I was able to reproduce the issue and I found out the following:

• when I edit the line length using the path modification tool (F2), the line thickness remains as original
• when I resize the line length using the selection tool (F1), the line thickness changes, although I have disabled all the scaling transformations (). Interestingly, the lines become thicker when I make the lines shorter. The scaling transformations should do the opposite. This does not happen for a single line, but with multiple lines.

Here's an animation:

Given I didn't notice this change for a while and I have modified a lot of objects alread. I have to undo this "bug" now, how would I change the line thickness?

I have tried:

• Setting the line thickness to something else, then setting it back to 0.5 mm.

Answer 1

You seem to be scaling multiple objects. You could try not scaling them.

Instead use the Edit Paths by Nodes tool (F2) to select the lines you want to adjust, then Shift+click and drag to select the nodes you want to move, then CTRL+click and drag them up. Use a guide to help you get everything to line up.

Example:

Another method, if you still want to scale the objects but not the strokes, is to go into the Preferences > Behaviours > Transform tab, and uncheck the Scale Stroke Width option. Then you can scale without scaling the stroke width.