The Create Thumbnail plugin does not generate the thumbnail size correctly

[M0gicYang]

Cura Version

5.9.0

Operating System

Windows 10

Printer

Custom FFF printer

Reproduction steps

The Create thumbnail set the length and width to 100.

Actual results

...
; thumbnail begin 32 32 956
...
; thumbnail begin 300 300 23256
...

Expected results

...
; thumbnail begin 100 100 13328
...

Add your .zip and screenshots here ⬇️

[GregValiant]

Thanks for the report.
I cannot duplicate this with the "CreateThumbnail" script included with "UltiMaker Cura 5.9.0"
When set to "100 x 100" I get:
; thumbnail begin 100 100 6712
When set to "150 x 125" I get:
; thumbnail begin 150 125 8452

Each of the UM Cura clone slicers has it's own "CreateThumbnail" post-processor. Within the UltiMaker Cura post-processor is this line:
gcode.append("; thumbnail begin {}x{} {}".format(width, height, encoded_snapshot_length))
The "width" and "height" variables are taken from the settings and so must be whatever your input was.

I don't see a bug here if you are indeed using the "CreateThumbnail" that is included with UM Cura 5.9.0.
I recall seeing gcodes generated by one of the Cura clone slicers (I can't recall which one) that always produced both a 32x32 and a 300x300 thumbnail in the same file.

Double check that you are indeed using UM Cura. You can go to the installation folder:
"C:\Program Files\UltiMaker Cura 5.9.0\share\cura\plugins\PostProcessingPlugin\scripts"
and zip the "CreateThumbnail.py" file and post it here and I'll look at it. It should be the same one I have.