[Crop entire document all layers in Photo v1]

That function alone was worth the V2 upgrade. Thanks @Carl123.

[Crop entire document all layers in Photo v1]

Is it possible to have an Affinity Photo V1 document with many layers, and to crop the entire document at once, DELETING all the extraneous data? I do not have a need for exporting the individual layers within this file in this particular example. I would just use this file as reference. But all the layers within this document are bigger than I need to see or ever have, so I'd like to crop them down all at once, rather than doing a Raster+Trim layer by layer. Currently, if I just crop a layer and save the document, the document still retains the full size of all the other images, bloating up the file size. This should be doable in a one- or two-click command, shouldn't it?

[Brush irregularities]

I figured out that I was using the Color Replacement Brush Tool, not the regular Brush Tool.

[Brush irregularities]

Dear Affinity,

I am working with a stereoscopic 12x1 cubemap 32-bit image.
I merged the main rendering and an Affinity exposure layer into one. Then I changed the format of the file to 8-bit color.
After that I tried to use the paint brush in the sky. This caused a lot of head-scratching.
I chose a color with the color picker. The paint brush is set to 100% opacity, 100% flow and the paint layer is set to 100% in Normal mode. All this should be fine.
However, the paint brush will not paint across the cubemap joint in one direction. It may paint across the cubemap joint in the other direction, but the paint color is changed (lightened), which should not happen. The paint brush also stops - gets cropped out - when I paint across the brighter sun area. This also should not happen. I am simply painting in 8-bit mode. Everything should be the same color, anywhere I paint.
Why is this happening?

Matt