SojaLin Could you tell us which version of Spine you are using? In version 4.3-beta, a fix was added to allow edit mesh hotkeys to be used in animate mode, so it is possible that the Tab key no longer switches between selected fields due to this change. I will investigate once I know which version you are using.

SojaLin Thank you for clarifying. I agree that it would be better to enable switching with the Tab key in a future version, so I have created an issue ticket for this improvement here:
EsotericSoftware/spine-editor898
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