When ? Suddenly and unexpectedly. But I can't recall every time and with which tool. Most recently was using SUPERHATCH. Object Snaps would turn off and deselect all snap modes right before inserting image. And before this with other tools.

It also happens on a WIN 8 PC with same version.

This is just one of many ACAD LT FOR MAC glitches I have to deal with and never seem to be fixed with updates and its extremely frustrating.