chrome:// can not redirect to dragon://

I install history button extension but it could not work for it goes to chrome://history but not dragon://history

Hi y44260351,
Find the historybutton.js file for the corresponding extension found here, Users\username\AppData\Local\Comodo\Dragon\User Data\Default\Extensions, right click and choose edit, then change the following (chrome to dragon) shown in the screenshot then save.
Re-open Dragon and try your history button.
Hope it works for you.

Alternative: Ctrl+H takes you to your history.

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