13/11/2017 at 14:18 #7577
After my last Windows update, several applications started showing weird behavior, namely the text cursor had acquired a tendency to wander left during typing, making accurate typing impossible. I managed to track down two causes:
1. My gaze was resting somewhere near the bottom of my primary screen, and
2. The Tobii “Windows snap assist” feature had to be enabled.
Turning off snap assist made my system behave normally again.
Windows version: Windows 10 Pro Insider Preview, build 17035
Hardware: GA-H81M-D2V, CPU: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz, RAM: 8GB
OS Version: Microsoft Windows [Version 10.0.17035.0] x64
Tobii Eye Tracking Core SW 188.8.131.5274
Eye tracker model IS4 Large Peripheral
Serial number IS404-100106843311
Tobii Controller Core Not available
Tobii USB Service Not available
Tobii Controller Driver 2.0.4
Tobii Service 184.108.40.20615
Tobii Engine 220.127.116.1142
Tobii Config 18.104.22.1689
Tobii Interaction 22.214.171.12488
Tobii Face Authentication for Windows Hello 126.96.36.199
Tobii Overview 188.8.131.52
Tobii Intro 184.108.40.20615/11/2017 at 12:46 #7591
Hi @twentythree, thanks for your report. I have been trying to reproduce this behaviour without success.
Could you kindly be explicit in which software you were running when the text cursor was moving (ie Chrome, Word, etc)
The cursor would not move if you were looking toward the top of the screen is that correct?
Also, I assume you are running the latest version of the Tobii Tracking Software?
Thanks for the details, we will try to and squash this bug as soon as possible.15/11/2017 at 17:26 #7594
As far as I can tell, I’m running the latest Tobii software, at least I get no updates when I check for them. I posted the precise versions above.
It doesn’t seem to matter what window I’ve focused, I’ve reproduced this in Firefox, Notepad, the Windows start menu, Windows settings, Tobii settings, Explorer, etc.
A low level keyboard hook (WH_KEYBOARD_LL) shows me injected keyboard events (flags: LLKHF_INJECTED, vkCode: 37, scanCode: 0; as opposed to regular inputs that have a scanCode set), most likely sent by Tobii software.
As for when exactly it happens, refer to the following screencast – it also seems to depend on what’s in the background: http://download.tiitoo.com/screencasts/2017-11-15%2017-09-20.mp4
In case it doesn’t reproduce for you, did you try this on a Windows Insider Build?16/11/2017 at 18:14 #7598
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