So you could see if you find an issue for this problem (or write one yourself) or you can try to clone and go to an older commit before this problem.
From my personal experience while I found Doccano alright to work with for a while I found there to generally be a lot of bugs and quirks around the frontend interface which can give you a hard time if you try to annotate a large corpus. Also I dislike the fact that you can annotate string spans which are not following the token spans, since that caused me to misclick and having to correct it a lot, but that might be a personal issue. I switched to Universal Data Tools Named Entity Recognition Tool which worked better for me since it does the mentioned things differently and can be run entirely in the browser.
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对我来说这似乎是一个错误，项目存储库几天前已更新。
该演示对我来说与您描述的问题相同，这意味着释放鼠标按钮时没有任何反应，并且我无法设置任何标签： https://doccano.herokuapp.com/demo/sentiment-analysis
使用稍微不同的脚本的 NER 演示仍然适用于我：https://doccano.herokuapp.com/demo/named-entity-recognition
所以您可以查看是否找到此问题的问题（或者自己写一个）或者您可以尝试克隆并转到此问题之前的旧提交。
根据我的个人经验，虽然我发现 Doccano 可以使用一段时间，但我发现前端界面通常存在很多错误和怪癖，如果您尝试注释大型语料库，这可能会给您带来困难。另外，我不喜欢这样的事实：您可以注释不遵循令牌跨度的字符串跨度，因为这导致我点击错误并且必须多次更正它，但这可能是个人问题。我切换到通用数据工具的命名实体识别工具，它对我来说效果更好，因为它以不同的方式完成上述提到的事情，并且可以完全在浏览器中运行。
Seems like a bug to me, the project repo was updated a few days ago.
The demo has the same problem for me as the one you describe, meaning that nothing happens on mouse button release and I can't set any labels: https://doccano.herokuapp.com/demo/sentiment-analysis
The NER demo which uses a slightly different script still works for me: https://doccano.herokuapp.com/demo/named-entity-recognition
So you could see if you find an issue for this problem (or write one yourself) or you can try to clone and go to an older commit before this problem.
From my personal experience while I found Doccano alright to work with for a while I found there to generally be a lot of bugs and quirks around the frontend interface which can give you a hard time if you try to annotate a large corpus. Also I dislike the fact that you can annotate string spans which are not following the token spans, since that caused me to misclick and having to correct it a lot, but that might be a personal issue. I switched to Universal Data Tools Named Entity Recognition Tool which worked better for me since it does the mentioned things differently and can be run entirely in the browser.