That should go in some sort of hall of fame of weirdest bugs.
I could imagine that it's not such a big deal from a technical point of view (just another inventory in reach of the inserter) but it sounds totally awesome.
OS: Linux Mint 19 x64 | desktop: Awesome 4.2 | Intel Core i5 8600k | 16GB DDR4 | NVidia GTX 1050 Ti (driver version: 410.104) (2019-03)
I just wanted to create a bug report for the exact same thing. My coal line was getting polluted with solar panels while upgrading from steam to solar.