Steps
1. open repro project
2. open WaterThing2 scene
3. ensure HDR = "Use Pipeline settings" on scene camera (this workaround ensures scene view uses HDR)
4. toggle "ClampAlpha0-1" on material of Water(2) Gameobject
5. check scene view vs. game view

Expected: something indicates to the user out-of-range values for alpha will give incorrect results when HDR=on
Actual: user needs to hunt for why scene view is showing incorrect colors compared to game view

Repro: 2019.4.15f1 + URP 7.5.1

workaround: if colors appear incorrectly, users can check that their shader graph master node receives values in expected range for all inputs.

Notes:
1. fix for workaround in step 3 is not yet released, see 1284369
2. no functional bug, issue here = it is not clear why the colors are broken in scene view
3. game view renders as expected (because URPAsset HDR=off)
4. even in URP versions with fix for 1284369 - it will not be clear for user that clamping is required
5. shader graph docs DO ALREADY specify the expected range, but users might not check this since it "works" in game view. see alpha = https://docs.unity3d.com/Packages/com.unity.shadergraph@7.5/manual/PBR-Master-Node.html