When zooming all connectors seem disconnected! This happens randomly! Why?

I have had this problem before but dont konw how to fix it. Basicaly i would be working on a part and all of a sudden i start to realise that all the connecters or points at the end of lines curves etc.. seem disconnected from where they should be when you zoom in. This also makes it hard to select points. I usually fix that problem by reverting ot an earlier saved version that does not have the probelm and i start again, also the problem seems to be part related not within the software. The problem will only exist in the file i am working on. I have posted the file, try zooming in on ANYTHING and you will see all the little connectors or dots or points just start to go bezerk!

How can i fix this?

Regards

Rami

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