I'm not sure which component this falls under, but I've had nighties for the past few revisions do anything from not load the doc correctly to actually hanging the whole browser. The URL is a publicly editable Google Doc.
Yup, this definitely causes strangeness. It might be a duplicate of https://bugs.webkit.org/show_bug.cgi?id=69412 but I'm not sure.
*** This bug has been marked as a duplicate of bug 69412 ***
It's definitely caused by abs/min/max intrinsics in the DFG, so it's a dup of the other bug.