Material Icons in Groups are not working, when multiple Icons with same prefix exist

Dashboard
1

Hello,

I recently recognized, that google material icons are not working inside groups, when multiple icons existing with the same prefix.
For instance if I select the heat mi-heat icon like so:
image
When deployed it looks like that:
image
It seems that it doesn't find the valid icon since there are several icons starting with heat inside the material icon collection.
When using for instance the head_pump icon it works as expected.
image

Is this a bug?

2

This might be because the icons which are not shown are part of the Material Symbols (new) which is the default selection. When I switch to Material Icons and use icons from there, it seems to work.
image