If the shortcut doesn't work, you can try an alternate method to restore your tabs. In Chrome (or any other Chromium browser), click the three-dots icon in the top-right corner and go to History ...

Chrome shows a dedicated Restore button in a popup window ... However, if you had only one tab, you can use the same keyboard shortcut. On the other hand, you need to visit each tab to reload ...

As a result, the tab switcher shortcut in Chrome on my phone has given up on keeping count. However, new research reveals Google plans to cull the mess and offer help with duplicate tabs.

Enable the tab search feature by modifying the shortcut target. This feature is currently available as a flag on Google Chrome Canary – but it will soon be available in the Stable version.