It only happens when using mod that gives the player a large inventory (such as 1000 slots) so that the inventory can held many items (which affect the performance of sorting).

Currently, the auto-sort function is called whenever the player's main inventory is changed. It works well, but if the player's main inventory is changing a lot during a short time (such as deconstructing using robots), the game will become very laggy (fps drops a lot) due to the frequent calls to a...

It shows overflow bars if the entities have 0 consumption/production.
Possibly a div/0 issue.

I have a lot of *rings* like this, and sometimes the issue showed in the pic will occur. Not very frequently, about once per 20 minutes.
Is it a bug or something is wrong with my design?