Keyboard doesn't disappear if you tap "Done" since the last Google Chrome update

Hello! I would like to use `contenteditable="true"` for a text. If you type something with a mobile device, and tap then the `Done` of your keyboard, the keyboard should disappear. This works fine with Safari on my iPhone. But since the last update, it doesn't work with Google Chrome anymore. It just stays.

Here is a screenshot to show what button I mean:

Here is the code that I have used:

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How would it be possible to fix this problem?