Tabler icons not displaying properly

[csalvato]

Duplicate of #103 but in English.

The icons work in edit mode but do not render in viewing mode.

Reproduction steps:

1. Install and set the Dev theme as active
2. Install the tabler picker plugin
3. While editing, pick a tabler icon using the tabler picker to be rendered in the the block
4. Click away from the block

Expected Behavior: The icon renders

Actual Behavior: An unattractive dummy character renders instead.

How can we help getting tabler icon support?

[PixelTux]

It seems that this might be connected to ligature support. If specific glyphs aren’t present in the font file, they may fail to render. Also, keep in mind that some fonts do not support ligatures at all.