When class names more than one, the mAP is false? about axelerate

[AIWintermuteAI]

Hi, there.
I don't want to guess what exactly do you mean, could you please describe your issue according to the template here:
#20
Otherwise, the issue will be marked Closed.

[wwzh2015]

Hi, there.
I don't want to guess what exactly do you mean, could you please describe your issue according to the template here:
#20
Otherwise, the issue will be marked Closed.

the multi labels mAp calculate is not exactly

[AIWintermuteAI]

[wwzh2015]

Why the multi labels mAp is so low? but train single label mAp is high.

[AIWintermuteAI]

Describe the bug
Users are not using template, which causes a waste of time - additional information is needed to be asked by contributors to find the source of the problem.

To Reproduce
Steps to reproduce the behavior:

Go to 'Issues'
Click on 'closed'
Scroll down to 'everywhere'
See all issues without templates - people are creating issues and asking "what is wrong, it doesn't work" without explaining what is the bug and what is expected behavior

Expected behavior
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