Mac OS 26- Icons in dock single click

This is one of those small but annoying things. In previous versions of macOS, I could single-click an application in the Dock and it would bring up its window (and space, if applicable).

In macOS Tahoe, if an app is already running and I single-click its Dock icon, the app is selected—the menu bar changes—but no window appears. I have to double-click the Dock icon to actually bring the window forward.

For example:

• Mail is running, collapsed in the Dock
• I click the Mail icon: it shows as selected, the menu bar says Mail
• But no Mail window opens
• If I double-click the Dock icon, then the window/space appears

I’m wondering if there’s a setting in System Settings that changed or got reset. Right now, this behavior is super annoying