Reproduction steps:
1. Open the user's attached "ConsoleTestInputSystem" project
2. Open Assets/Scenes/TestRemap
3. Enter Play Mode
4. Press the rebind key or button (R on the Keyboard, LB on the Controller)
5. Press any new non-trigger key or button (for example A on the Keyboard, A on the Controller)
6. Press the same key as in step 5 multiple times
7. Observe the Game View

Expected result: The new key will get triggered multiple times, message "Action triggered by user" will be printed multiple times
Actual result: The new key only gets triggered once, the message "Action triggered by user" will be printed only the first time

Reproduces on: 1.1.0-preview.2 (2019.4.15f1, 2020.1.15f1, 2020.2.0b13, 2021.1.0a7)
Not reproducible: 1.0.0 (2019.4.15f1), 1.0.1, 1.1.0-preview.1 (2020.1.15f1) (different kind of behaviour, still not the expected result)
Can't test: 2018.4 (can't successfully import the project)

Tested with: Xbox One controller

Note:
- When rebinding the button to a trigger (such as LT/RT on the Controller) or an analog stick, the button triggers as expected
- In versions 1.0.0, 1.0.1 and 1.1.0-preview.1 the Action.triggered gets activated when Input's value changes