Photoshop 2024 (ps ver 25.12) 32 Bits/Channel Levels /Curves truncated

[Jeff Arola]

In Photoshop 2024 (ps 25.12) on both Mac and Windows with a 32 Bits/Channel document in RGB Color Mode, when using either an Curves or Levels Adjustment Layer the right half of the histogram is grey and seems that the histogram is truncated to the left side of the histogram display.

For Curves its the RGB and the Red, Green and Blue channels.

With Levels it's just the Red, Green and Blue channels.

Same goes for Image>Adjustments Curves or Levels.

Curves

Levels

[Bojan Živković]

On my end, all channels, including RGB, are available for both Levels and Curves. However, in Curves, half of the histogram is missing, as shown in the screenshot below. This bug appears to be inconsistent.