P: Toggle between layer mask and layer

@Stephen Marsh, thank you for that detailed instruction on the scripts! You are correct, I wasn't feeling the bleeding pain to take this route. But, it's helpful to know.

And, as of version 23.3.2, the problem looks to be corrected, for me. Thanks, @Mohit Goyal .

@alllan – no worries, just let me know if you wish to explore this workaround. It can be hard to use new keyboard shortcuts due to muscle memory, so you would need to really be feeling the pain to go down this path...

Edit: Better to post the scripts than not, just in case it helps somebody in the future...

Select the active layer mask channel:

selectLayerCompositeChannel("mask");

function selectLayerCompositeChannel(chanPara) {
    // "RGB" | "mask"
	var s2t = function (s) {
		return app.stringIDToTypeID(s);
	};
	var descriptor = new ActionDescriptor();
	var reference = new ActionReference();
	reference.putEnumerated( s2t( "channel" ), s2t( "channel" ), s2t( chanPara ));
	descriptor.putReference( s2t( "null" ), reference );
	descriptor.putBoolean( s2t( "makeVisible" ), false );
	executeAction(s2t( "select" ), descriptor, DialogModes.NO);
}

Select the active layer composite channel:

selectLayerCompositeChannel("RGB");

function selectLayerCompositeChannel(chanPara) {
    // "RGB" | "mask"
	var s2t = function (s) {
		return app.stringIDToTypeID(s);
	};
	var descriptor = new ActionDescriptor();
	var reference = new ActionReference();
	reference.putEnumerated( s2t( "channel" ), s2t( "channel" ), s2t( chanPara ));
	descriptor.putReference( s2t( "null" ), reference );
	descriptor.putBoolean( s2t( "makeVisible" ), false );
	executeAction(s2t( "select" ), descriptor, DialogModes.NO);
}

Toggle between selected composite and mask channels:

/* 
Based on a script by jazz-y
https://community.adobe.com/t5/photoshop-ecosystem-discussions/detect-if-mask-or-layer-is-selected-with-js-script/m-p/11153109
*/

s2t = stringIDToTypeID;

(r = new ActionReference()).putProperty(s2t('property'), p = s2t('hasUserMask'));
r.putEnumerated(s2t("layer"), s2t("ordinal"), s2t("targetEnum"));
if (executeActionGet(r).getBoolean(p)) {
    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('name'));
    (r = new ActionReference()).putEnumerated(s2t("layer"), s2t("ordinal"), s2t("targetEnum"));
    layerName = executeActionGet(r).getString(p);

    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('channelName'));
    r.putEnumerated(s2t("channel"), s2t("ordinal"), s2t("targetEnum"));
    channelName = executeActionGet(r).getString(p);

    (r = new ActionReference()).putProperty(s2t('property'), p = s2t('alphaChannelOptions'));
    r.putEnumerated(s2t("channel"), s2t("ordinal"), s2t("targetEnum"));
    alphaChannel = executeActionGet(r).hasKey(p)

    if (channelName.indexOf(layerName) == 0 && !alphaChannel) {
        // var select = confirm('Layer mask selected\nSelect layer?') ? 'RGB' : null
        var select = 'RGB';
    } else {
        // var select = confirm('Layer selecter\nSelect mask?') ? 'mask' : null
        var select = 'mask';
    }
    if (select) {
        (r = new ActionReference()).putEnumerated(s2t("channel"), s2t("channel"), s2t(select));
        (d = new ActionDescriptor).putReference(s2t("null"), r);
        executeAction(s2t("select"), d, DialogModes.NO);
    }
}

https://prepression.blogspot.com/2017/11/downloading-and-installing-adobe-scripts.html

Thank you, @Stephen Marsh, for that suggestion.

@alllan – In the short term, a script could be used with a custom keyboard shortcut.

Looks like the change wasn't pushed to the release version of Photoshop. The fix for this will be in an forthcoming update.

Hello,

The problem still exists, for me, I'm on a MAC, using OS 12.3.1, and Photoshop 23.3.1.

The problem is still there in the newly released Photoshop 22, windows 10.

Could you please at least keep what's already working??