Tilemap not showing on iPhone [SOLVED]

Bugs
1

When I run our game on an iPhone 4S running iOS 7.0.4, some of the tilemaps are not rendered. This was not the case before, but I can not what version of Defold introduced the bug.

When running on an iPad Mini with iOS 8.1, everything is rendered as expected.

2

Forget about this, it was solved by setting a variable in one of the shaders to mediump instead of lowp