BUG: Prevent some spatial ROI from getting too small #368

Job	Run time
initial_checks / Load tox environments	4s
initial_checks / codestyle (ubuntu-latest)	16s
no_coverage / Load tox environments	4s
tests / Load tox environments	4s
tests / py38-test (ubuntu-latest)	2m 4s
tests / py39-test (ubuntu-latest)	2m 2s
tests / py310-test (ubuntu-latest)	2m 3s
tests / py311-test (ubuntu-latest)	2m 16s
tests / py38-test (macos-latest)	3m 8s
tests / py39-test (macos-latest)	2m 35s
tests / py311-test (macos-latest)	2m 48s
tests / py38-test (windows-latest)	3m 22s
tests / py39-test (windows-latest)	2m 52s
tests / py310-test (windows-latest)	3m 38s
no_coverage / py39-notebooks (windows-latest)	3m 34s
no_coverage / py38-notebooks (macos-latest)	2m 7s
no_coverage / py310-notebooks (ubuntu-latest)	1m 35s
no_coverage / py311-docs (ubuntu-latest)	1m 50s
no_coverage / py39-docs (macos-latest)	2m 6s
no_coverage / py38-docs (windows-latest)	2m 16s
publish / Build source and wheel distribution	4m 3s
	44m 47s

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