Sometimes when undoing, it reverts to the initial labeling form.

[whatseob]

Describe the bug
Sometimes when undoing, it reverts to the initial labeling form.
After modifying auto-detected labels multiple times, when undoing, it reverts to the initially detected form instead of going back one step.
This phenomenon disappears when refreshing, but sometimes occurs when labeling.

To Reproduce
Steps to reproduce the behavior:

1. Go to project
2. Click on Label all tasks
3. labeling
4. See error (sometimes)

Expected behavior
No difference from usual labeling

Screenshots
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Environment (please complete the following information):

• OS: ubuntu 20.04
• Label Studio Version 1.15.0 {latest]
• LABEL_STUDIO_LOCAL_FILES_SERVING_ENABLED=true LABEL_STUDIO_LOCAL_FILES_DOCUMENT_ROOT=/hdd10T_1 label-studio --ml-backends http://localhost:9111 -db postgresql << Our label studio execution code