Factorio 1.1.46; Factorissimo 2.5.3; and cross mod underground-pipe-pack 1.1.2, with addon underground-pipe-pack-simplified 0.1.1 [called "Advanced Fluid Handling" in-game]
AFH offers ways to 5-way split underground with above ground. I believe it is enabling me to rotate the arrow icon in the 4 directions under the substation icon in the buildings. Last I knew, it would toggle up or down, but not left or right. default control keybindings also conflict with the AFH mod.
It's not a show stopper, but I now wonder a bad setting to "break" Factorissimo's building program or memory settings. Calling attention to this cross mod issue and if the dev wants to do anything with it.. All up to you! Thanks for the mod!