Operating system: Windows 10
Graphics card: 2x 1080 Ti
Broken: 2.80, 1b6a394d862, 2018-12-03 23:39
Short description of error
If you have an animated object, lets say location and rotation have keyframes, and you animate (not keyframe) both location and rotation further down the line, and then decide to keyframe location by Shortcut I -> Location or Right Click on the property, the other property gets reset to the last known value.
Yes I could keyframe both properties at the same time but that behavior is still odd.
Exact steps for others to reproduce the error
Based on the default startup or an attached .blend file (as simple as possible).