This has been verified in chemical plants and assembly machines, probably happening on all machines.
[0.13.15] Player rendered behind Modules
Re: [0.13.15] Player rendered behind Modules
The alt-info icons (these icons) by design render on top of *everything* except the mouse and GUIs. If you don't want them to render on top of something turn them off (default alt key).
If you want to get ahold of me I'm almost always on Discord.
Re: [0.13.15] Player rendered behind Modules
I would say the icons should be part of the actual machine, why would this not be the case?