Hey some of us had sound out this issue almost 2 years ago with the "feature" on the original feedback forum that had now been closed. Almost a year had past since one of your colleague claimed to have put in a "feature request ticket", and there are still no fix nor update on the progress.
Again I want to emphasis that this is no longer a feature request (that your colleague had suggested) but a bug as it's not performing in the way it's supposed be.
For a quick reminder to the problem. It's way too sensitive, I estimate a rough 20-30% of the time I switch to another a tool, the feature will activate, and without me hitting the shortcut key, the tool will switch back to the previously used tool.
In the time since I noticed this issue, I had change and tested with 3 different keyboards, changed my PC, upgraded the hardwares, and move from Windows 7 to 10. Gone through all the photoshop updates, and yet nothing had change, the issue stayed.
And meanwhile photoshop had introduced plenty of features in between but there was not a single update concerning this issue. So for god sake, can you guys do something about it?