Image export with split layers ignores layer effects

[Dr-Doofus]

Pixelorama version:
v1.1-beta1 (commit hash 1d44c3d)
I would like to specify I have been using v1.1-dev prior to testing this issue (commit hash unknown - sorry - project file says I built it February 1st, early the morning) and it also had the same problem.

Where did you download Pixelorama from?
Built from source using the Godot editor

OS/device including version:
Linux Mint 21.3 x86_64 with KDE Plasma 5.24.7
GPU: NVIDIA GeForce GTX 1660 SUPER (Driver version 535.183.01)

Issue description:
While I was creating a sprite that composed of several layers with effects to ease the workflow, I noticed that when trying to export a set of sprite images with "Split layers" enabled ignores any and all effects applied on that layer. I've tried several different effects (Invert Colors, Outline, Drop Shadow, Offset) but the exported image applies none of them in the final product.
The workaround to this is just to apply each effect per layer, but with other exports working fine with unapplied layers (and saving a whole lot of Ctrl+Z presses) I think this warrants a bug report.
EDIT: After running it with the console open, it doesn't seem to throw any errors or warnings either - it just doesn't apply the layer effects and that's it.

Steps to reproduce:

1. Create a layer with some effects and just draw whatever. For demonstration purposes I'm using these:
   

2. Open the "Export" dialog, make sure it's in the "Image" tab, and navigate to "Advanced options", and tick "Split layers".
   

3. Observe the effect.
   

[OverloadedOrama]

Thanks for reporting! It should be fixed now in 5ab6cc2.