It appears SteamVR has reverted the change that caused this issue in their Beta 1.7.2 version.
"For legacy input applications, when the trigger is clicked the trigger value will not be set to 1.0 if the click action is already coming from the trigger. This fixes a bug with Oculus Touch controllers in games like VRChat, where the grip trigger value would jump from partially pulled to fully pulled. For legacy bindings that put a trigger click action on another button, the existing behavior remains and the axis value will be set to 1.0."
If you are experiencing this, test out the SteamVR Beta. If you've changed your binds as a workaround, please revert back your binds to your previous version, or use our defaults.