Strange behavior when inspecting lines in WGLMakie

[kbarros]

This is a follow-on to #3503. Not an immediate blocker for us; we've moved away from WGLMakie due to multiple issues (SunnySuite/Sunny.jl#211). GLMakie gives an overall more robust experience, and we're happy with it.

The following snippet leads to strange behavior, as shown in the movie below.

using WGLMakie
begin
    segments = Point2f[(0, 0), (0, 1), (1, 0), (1, 2)]
    color = [:red, :black, :blue, :black]
    inspector_label(_, i, _) = (@show Int(i); ["hello", "world", "nice", "day"][mod1(i, 4)])
    fig, ax, pl = linesegments(segments; color, inspector_label, linewidth=10)
    DataInspector(ax)
    display(fig; backend=WGLMakie)
end

2D_example.mov

[kbarros]

If anyone else encounters this, a workaround for us was to use arrows instead of linesegments. Setting arrowsize = 0 draws just the line part of an arrow, as a cylinder. With arrows, the inspector pop-up works well in both GLMakie and WGLMakie.