This problem also occurs in Mint 18 with Cinnamon 3.
Right-clicking the panel, selecting Troubleshoot then restarting Cinnamon temporarily fixes it. It's rather sad that this issue has been around for over 3 years now.
This problem also occurs in Mint 18 with Cinnamon 3.
Right-clicking the panel, selecting Troubleshoot then restarting Cinnamon temporarily fixes it. It's rather sad that this issue has been around for over 3 years now.