Perhaps try these addons:
    If this happens again note if it comes up with an .lua error window, if it does can you please post a reply here on a code, in the editor click the Format down drop and select code, paste the contents of the .lua error.
    If it doesn’t show an .lua error then can you please try with just Dugi Guides enabled. note when this shows again and action last performed, just trying to find a possible cause.