Navigation passed math insets using the cursor keys tends to get stuck. Eg blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah |a=b blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah
The cursor | is outside the math inset but is stuck. Subsequent ups and downs don't shift it. Hit left and I disappear up to somewhere near the start of the document. -- Angus