P: Canvas Size relative Width/Height not recorded in Actions (values saved as blank)

In Adobe Photoshop, the updated Canvas Size dialog fails to record relative dimensions when recording an Action. This works correctly in 27.3.1 (Release), but is broken in 27.4.0 (Beta).

Steps to reproduce

1. Open any document.

2. Create a new Action (in the Actions panel).

3. Click Record.

4. Go to Image → Canvas Size…

5. Change the units to millimeters (mm).

6. Switch the size mode from Absolute to Relative.

7. Enter values:

   • Width: X mm

   • Height: Z mm

8. Click OK to apply.

9. Stop recording.

Expected result

The Action records a Canvas Size step with parameters:

• With Relative

• Width: X mm

• Height: Z mm

• Horizontal: Center

• Vertical: Center

• Extension Color: Background

Actual result (27.4.0 Beta)

The Action records a Canvas Size step with:

• With Relative

• Width: (blank)

• Height: (blank)

• Horizontal: Center

• Vertical: Center

The Width and Height fields exist in the recorded step, but their values are not saved (empty).

Adobe Photoshop Version: 27.4.0 20260201.m.3398 df09e8f  arm64 (beta, PublicBeta)