If the pick block key (middle click) is remapped to a key on the keyboard the inventory shortcut in creative mode where you hold down the key and drag your mouse over inventory spaces to fill them with a selected item no longer works.
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violine1101
migrated
Thank you for your report!
We're actually already tracking this issue in MC-141942, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.
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