chore: fix mutator blocks jumping #6559
Merged
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The basics
npm run format
andnpm run lint
The details
Resolves
Fixes #6541
Proposed Changes
Reverts changes made in #6301 that caused jumping.
Reason for Changes
Bugs are bad.
Test Coverage
Manually tested the repro steps from #6541
Documentation
N/A
Additional Information
Thank you to Maribeth for the bisect + cherrypick idea!
Also for now I've just reverted the bug-causing changes. But I'm also going to file a bug for actually refactoring this system to be more testable + less stateful + not use private properties on svg elements.