My Krok shows it as FE. Where did you get your ROM? I think I have the one from here. Unfortunately, Kevin Horton doesn't list it in his paper about cart sizes and bankswitching.
The stella.pro file must be incorrect on this one. The one I have shows FE in stella.pro, but the game doesn't work correctly in Stella unless you change the properties of the game from FE to F8.
Confirmed, and fixed in CVS. You don't actually have to specify any type; the autodetection works fine, detecting it as F8.
So, are we saying the Krok Cart database mistakenly has it listed as FE, instead of F8?