Lockscreen does not rotate Nexus 7 (flo)

[Elowan]

hi there,

I noticed that the "lockscreen" does not rotate on my Nexus 7 2013 ... it´s always in landscape and the "flower" thingy´s "leaves" are cut off a bit and overall it looks a bit weird...

Is there a way to fix this (by simply rotation it to portrait mode somehow)?

-greetz