Not sure if it is just me. I am used to ing through editor fields and entering stuff via keyboard. For example, I often click into the x coordinate of a transform, enter a coordinate, pressing to go to y, enter a coordinate…
This used to work up to 2017.1; now the editor doesn’t seem to activate the text field after a . I have to press to go into edit mode.
Is this an intended change or a bug?
This is driving me completely around the bend. Luckily, Unity seems to have acknowledged the issue, and says there’s a patching coming soon. See the Known Issues list for 2017.2:
https://unity3d.com/unity/whats-new/unity-2017.2.0
Editor: Input fields don’t immediately accept input after tabbing to them. It is necessary to click on the field. This will be fixed in a patch release soon. (952802)
Ah. I must have overlooked that. Thanks for letting me know, and let’s hope the patch arrives soon 
This was happening in later version of 2017.1 as well. Driving me nuts. Glad a fix is on the way.
Unity QA: Get it together!