Have seen a lot of posts old and new concerning this crash-on-save bug, which is a bagbiter. LO Draw is now nearly unusable on my setup.
My details follow: Libre Office Draw reports v 4.1.3.2 “not responding” error after saves. Downloaded and installed clean copy today in an attempt to fix (removed old version). Sometimes this “not responding error” is followed by a crash. Sometimes the program eventually becomes responsive again after about five minutes. This happens with every save. This just began to occur. Running Windows 7-64 bit and v 4.1.3.2 Lib Off. Have tried a clean install and several different files all created with draw. Same with no other apps running. I have been using LO Draw for a year with no difficulty. And with some big files.