As the title states, sometimes when a double slim inserter is placed, it has a large arrow overlay that looks similar to the single slim inserter graphic. However, when the double is removed, the large arrow remains, and the only way to remove it is to place another double slim inserter in the same spot/orientation and remove it again.

Screenshot showing some of the residue:
https://i.imgur.com/sfTJnXH.png

(The visuals of the double slim inserters seem glitchy overall; this seems like it's probably just one effect of whatever's going on.)

I can not reproduce this behavior.
How do you place and remove the double inserter?

Everything looks as it should.
https://prnt.sc/CEHLIq529YNN

It may only happen with the yellow ones. I've been using a mixture of hand-placement and bot-placement, and it's sporadic in any case so it's hard to be sure, but I think the bot-placed ones are more likely to have the issue.

I do have a fairly large number of mods installed, so I guess it's possible there's a minor conflict somewhere? I can share a save file if you want.

I tested this with the yellow one.
the technique behind yellow ones are the same as the blue ones,.only color and speed are different:
I only used the blue ones in the screenshots so that you can see the difference to the yellow inserter arrow that Factorio displays with Alt.

Yes, send me your save, that might help

Pardon the mess, I was in the middle of some restructuring:
http://www.dragonma.us/files/factorio/kse.03.zip

can not reproduce the behavior.
all inserters I place manually or by bot, i can remove by hand or by bot without any problems.

Strange. I guess my install is haunted then. ¯\(ツ)/¯

Strange. I guess my install is haunted then. ¯\_(ツ)_/¯

this is unlikely because i used your configuration.
the error must be somewhere else or you must be doing different things than i did with the inserters.