Does this work on current versions of WebView on a real device? (currently, version 50)?

If so then this is probably an old bug in the implementation that we fixed, and the only way this will be fixed is for you to use a newer WebView version. We don't currently release apk updates suitable for the emulator though, so you'd have to just use a newer emulator OS image :/

Yes, I reproduce it on a real device android 5.1, but on newer version datalist works as expected.

Ok, I was expecting a workaround (it is said as supported on caniuse.com for these android versions), I'll use custom js.

Thanks.
Louis.

Can you reproduce it with the latest WebView update installed from the Play Store? Real devices with 5.0 or later get WebView updates without needing the OS to be updated - testing using the preinstalled WebView version isn't very useful as only a tiny proportion of users (a few percent) don't have some updated version.

If you can reproduce this bug using the *latest* play store webview on any Android 5.x and up device then that would be an actual bug we need to fix, but if it's only broken on outdated webview versions then we've already fixed it :)

Also, while I'm not sure about the specific cause of this problem, usually when we see problems with popup windows (this is a popup window, even though it may not look like it) this is because the app is creating WebView using an Application context instead of an Activity context. We try to make sure that using an Application context does work in general, but Android strongly discourages this and it's not really "proper" usage. I don't know what Cordova does, but if it's passing the app to the WebView constructor then making it pass the activity instead will probably fix the bug on all versions of android/webview.

Thank you for providing more feedback. Adding requester "torne@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Oops, bot is too slow and doesn't notice I already replied ;)

I finally found a Nexus 4 with Android 5.1 to test with the last webview version. I installed my "datalist for test" app and I still had the issue (the webview was 39.0.0) 

I went to the play store and updated the webview and now it works !

I don't know if it is acceptable to tell the user that they have to update the system webview to use our app. 
Can't we tell to the device that our app depends on the android webview version X and let him trigger the update if it's needed.

Anyway, thanks for the support :)
Have a good day.

Almost all users already have a recent webview update installed. It updates automatically by default.

There's no way to express dependencies between packages in Android, unfortunately.