White Mask Not Been Added To Group

Hi Jeff,

This is an issue that appeared in a custom UXP plugin executing a series of batch play commands in a single modal context starting with Photoshop 27.9.1 and has carried over to 27.10. Running the same plugin on Photoshop 27.8 and earlier works fine with no issues.

The issue was also confirmed to exist when recording and playing back the actions in the PS Actions panel.

We tried several different workarounds such as splitting the batch play up and creating the white mask in it’s own modal context after the group was created. That did not work and produced the same “Make” error when trying to create the mask.

We also tried polling the menu state of Layer > Layer Mask > Reveal All in a loop and waiting for it to become available after creating the group, which it never does.

The only successful workaround discovered so far is executing the create mask command inside of a setTimeout() callback to yield execution back to the main thread before trying to create the mask.

await new BatchPlayer()
    // Group selected layers.
    .AddCommand(Commands.Layer.MakeGroup, {
      name: layerName,
      fromActiveLayers: true,
    })
    // Set layer blend mode.
    .AddCommand(Commands.Layer.SetBlendMode, {
      blendMode: BlendMode.Lighten,
    })
    .PlayModal({
      historyStateInfo: {
        documentID: activeState.document.id,
        name: 'Make Group (Lighten Mode) - Group',
      },
    });

  // HACK: Doing a setTimeout seems to be the only 
  // reliable way to prevent the "Make" error.

  setTimeout(async () => {

    assertNotNil(activeState.document);

    await new BatchPlayer()
      // Add white mask.
      .AddCommand(Commands.Channel.MakeMaskChannel, {
        maskCoverage: MaskCoverage.RevealAll,
      })
      .PlayModal({
        historyStateInfo: {
          documentID: activeState.document.id,
          name: 'Make Group (Lighten Mode) - Mask',
        },
      });
  }, 100);