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When updating the label information in the card, the same content drawing is updated twice.

Hello everyone.
I'm developing a Chrome extension using the Trello API.

togglo - toggl tracking for trello

While developing the function using MutationObserver, there was a behavior that bothered me when operating Trello.

When updating the label information in a card, the same drawing is updated twice.
When the label information in a card is 0 or 1, the drawing is updated only once.

Is this the correct behavior that Trello expects?

When I want to use MutationObserver to make Chrome extension work with the screen update, I am wondering what I should do because if the same update is done twice, the same action will be done twice in a row.

Thanks for reading.

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