Sometimes arrows remains after entity is removed, creating a weird visual bug. Usually happens if entity was removed by bots, for example, but a few times happened when decosntructed by hand, too.
They can only be removed by disabling this mod, loading save, saving without mod, enabling it back, and load the game again.

See screenshot: https://imgur.com/a/Bh9kFxm

Probably something new added in the 2.0 update. I'll look into it.

In the meanwhile, changed mod options should clear the indicators as well.

Are you using any other mods? If you do, please note them.

I noticed it was getting out of hand while trying to link my first set of Thrusters: https://i.imgur.com/vU2z1Gq.png

Here is my save if you want a live example + mod list: https://www.mediafire.com/file/0b57ni7z7sycdeg/2.0_SA_-_Connection_Indicator_on_Space_Platform.zip/file
It's on the bottom of the second spacef latform named 'Space Travel', it's also pinned.

Space platforms are fixed for the next version. The mod was missing hooks on the space platform's build/remove events.

Lets focus on problems on ground then. I prefer to fix them together if possible.

OK it seems to be related to ghosts being removed

Fixed for next version

Cheers!

same issue with https://mods.factorio.com/mod/Cursed-FMD.
The step:
1. Build the miner.
2. Change the filter of the miner
3. Arrows remains

This is unfortunately a bug with Cursed-FMD. They do not raise an event when swapping buildings (which is done when they switch filters).

I opened a bug report there https://mods.factorio.com/mod/Cursed-FMD/discussion/672603bf4bfbac5d933fa295