This does not happen when overriding master elements on a page manually - everything works as expected i.e. the textFrames don't move.
I'm using InDesign 14.0.2 x64 on Windows 10.
Vidyadhar Joshi commented
I have the same issue and I'm right now using InDesign 16.0.1 x64 on Windows 10. For me, the text frame jumps about 2 inches on both X and Y axis.