All have been fresh installs from OEM media - no system imaging. This has been tried with all the different versions of the driver (the Lenovo version is nothing more than a rebadged/customized version of the Wacom UWP driver), and with multiple version of Win 10 Pro/Enterprise (1607, 1703, 1709).

This pretty much prevents the pen from being used - more often than not, the stuck key symptom makes the pen seem unresponsive in apps until one remembers that 'oh, Win may be stuck AGAIN'. The ideal situation for this may be something like setting the long-hold on the button to starting Powerpoint, but then you are stuck until you can hit the key - which on convertible units like the X1 Yoga require the unit to be flipped back to access the keyboard (or opening the OSK). It prevents the pen from being useful at all. Opening Powerpoint (which switches the pen buttons to presentation mode) prevents the pen from drawing on the screen until the Win key is tapped to 'release' the Win key. Clicking 'E' during the stuck period will open Windows Explorer (unwanted). For example, clicking the top button to open Onenote works fine, but the Win key will stick so that hitting the 'X' to close will not work until the Win key is tapped on the keyboard. It will often result in the Win key 'sticking'. It doesn't matter what the single button click is set to - showing the Windows Ink Workspace, opening a program, performing a keyboard combo, or 'none'. I've also tried the Lenovo driver (7.3.4-52), Wacom Feel Driver (7.3.4-47), and the Wacom Feel UWP driver (7.5.1-34). I've tried this on 3 different AES laptops (Lenovo X1 yoga, Fujitsu T937, Lenovo X1 tablet). The issue is that the Bamboo Ink, in AES mode, has an issue that it will 'stick' the Win key when the top bluetooth button is clicked. Anybody from Wacom have an update or fix? I noticed that another person below had the same issue, but never noted if it was resolved.

Bamboo ink stylus troubleshooting