[NTG-context] clipping in metafun has weird side effects

Dear all, I stumbled upon some very weird behaviour of clipping in metafun/context. When I add some clipped pictures to currentpicture and draw something dashed, some subsequent lines will also be drawn dashed. This behaviour only shows up with context but not with mptopdf or mpost. I attached a minimal example and the corresponding output of context and mptopdf. I tried context versions 2014.05.21 22:04 and 2014.10.29 17:47, but the result is the same in both. Tobias --