Importing from blender adds gimbal locks

For every model I have created in Blender today, when I import into unity and try to rotate individual objects using the inspector, both y & z values rotate around the vertical axis. This happens with both .blend & .fbx formats, but not .obj. It only seems to be happening with newly created models; I tried importing a model I had created some time ago & had no issues.

I have tried creating several models, including one which was simply a pair of cubes, and in every case it's the same result; the model as a whole rotates OK, but the individual components are all gimbal locked. I'm using the newest versions of both programs. Does anyone have any idea why this is happening or how to fix it?