Huge blank space after the cell output

[Ark-kun]

Type: Bug

When some Jupyter cell is re-executed, the size of the output cell and the surrounding area decreases to represent empty output. However sometimes, while the output cell size decreases, the size of the gap between the cells remains big (sometimes bigger than vertical screen). So there is a huge blank space after the cell output and before the next cell.

I'm currently not sure how to reprodce this reliably, but it should be like this:
0) Create several notebook cells and focus on the 1st one.

1. Run a code cell that creates multiple outputs (multiple truncated outputs. It's possible to have up to 500 of them.)/
2. Replace the cell code with print("Hello world") and re-run the cell.
3. The output is now small, but the gap between the end of output and the beginning of the next cell is huge.

Extension version: 2024.7.0
VS Code version: Code 1.92.2 (fee1edb8d6d72a0ddff41e5f71a671c23ed924b9, 2024-08-14T17:29:30.058Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	AMD Ryzen 9 5950X 16-Core Processor (32 x 3394)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled webnn: disabled_off
Load (avg)	undefined
Memory (System)	127.93GB (47.38GB free)
Process Argv	--crash-reporter-id 4c472b0d-1b85-4f57-b29c-3c522acbd317
Screen Reader	no
VM	0%

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[amunger]

the output should shrink down when the execution is complete, is that not happening for you?

Does it repro when you set up your cell like this:

from IPython.display import display, Image
for i in range(1, 10):
    display(Image(filename='image.png'))
    for j in range(31):
        print('hello')

[Ark-kun]

the output should shrink down when the execution is complete, is that not happening for you?

Normally it shrinks down immediately after the execution starts, but sometimes it lags and few times it never shrinked, so I consider that a bug. I think there might be some race condition issue in the resizing code (e.g. the gap rectangle resizes itself to the height of the output rectangle, but in rare cases this happens before the output rectangle shrinked).

The issue occurred with text-only outputs (prints and logging.warns), no special IPython outputs.

[hujh818]

+1