Texture tiling broke, after importing material and texture from 2018.x into 2017.x (using unitypackage)

Imported some .unitypackage from 2018 into 2017 (to downgrade), and had strange texture issue with some part of the model.. took couple of hours to find out that material tiling had resetted to 1 (instead of 100 – duh!) and then also texture was not properly tiling.. (even though wrap mode was correctly set to repeat)

Comparing .meta files revealed the difference, and sure enough, editing mipBias: -100 into mipBias: -1, texture wrap works again! (replace the zeros with -1 also just in case)