Pixel Personna - Major Issues

[Honeyblonde]

Nested pixel layers don't show any strokes I make -- regardless of color or brush type/size. 

I've tried adjusting settings; closing & reopening Affinity; restarting PC. Nothing fixes it.

Please help!

[GarryP]

We might need to see the layout of your document layers to help further.
It helps if we can see what you are working on and how the layers are arranged.
A full-screen screen-grab showing your Layers Panel expanded so we can see the layer(s) in question usually helps.
In the meantime, check your brush Opacity is not 0% and make sure you are not painting onto an Adjustment layer.

[Ray S.]

And in addition to GarryP's suggestions, check if the "Protect Alpha"-button (in the tool-option-bar) is NOT pressed/engaged.

[Honeyblonde]

Thanks for the responses, guys. 

While I appreciate your suggestions, the items you mentioned are not the problem.
The layer is not locked, nor transparent, nor alpha protected.

My ability to paint on pixel layers has never been an issue prior to yesterday.
I'm truly flummoxed, and frustrated at being stalled out. 

I have taken/included a screenshot, as requested.

[walt.farrell]

From the screenshot, your pixel layer is clipped inside the "fingers hand R" Curve layer.

Where are you trying to paint?  You can only paint within the bounds of that layer due to the clipping. (Maybe you know that, of course, but when things aren't working it can help to review the basics, sometimes.)

According to the pixel layer's thumnail you have painted along the lower edge of that hand. Also, what brush are you using? You might try one of the solid basic brushes as a start.

[Honeyblonde]

Hi, Walt.

I appreciate the suggestion. I am a seasoned digital artist, and have used Affinity Designer since its' inception. 
(Actually used Serif's "DrawPlus", before that. 😊)

I tried a multitude of brushes, even though I fully suspected that wasn't the issue. None work.
Even if I add a pixel layer outside of any shape, it doesn't show what I paint with my brush.

This has occurred after I updated to the newer software release, so it would make sense that it's some kind of bug in the 1.9v.

I figured I'd try to install the prior (stable/non-beta) 1.8.5 version, but it gave me a 'this is an older version' error upon doing so.
I really don't want to uninstall then reinstall, since it would mean having to import all my brushes again.

[StuartRc]

There are a couple of things you could try

a.is protect alpha selected on context bar
b. check brush opacity/layer opacity
c. are you painting with the same colour of the parent object (this one catches me out!)
d. are you trying to paint with a background colour
e. is the layer you are trying to paint selected
f. sometimes I get caught out by trying to paint in an object only to find out its not selected and I am painting somewhere else on the page
g. is there something selected?