System Information
Operating system: Linux-5.0.0-37-generic-x86_64-with-debian-buster-sid 64 Bits
Graphics card: GeForce GTX 1660 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 435.21

Blender Version
Broken:

• version: 2.82 (sub 6), branch: master, commit date: 2019-12-30 15:42, hash: rB03145616843e
• version: 2.81 (sub 16), branch: master, commit date: 2019-11-20 14:27, hash: rB26bd5ebd42e3
• version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e

Short description of error
Using the default shortcut Shift + S does not perform the action to save an image. Neither in the Image Editor window nor in the UV Editor window.

Exact steps for others to reproduce the error

1. Open Blender
2. Choose General in the Splash Screen
3. Choose the Texture Paint workspace in the top menu
4. In the left window: Click the + New button in the header and press OK
5. Still in the left window: Press Shift + S (which should open a file browser to save the image. But it does not.)