When there's a DropDownList in the Toolbar's oveflow, clicking to open the DropDownList closes the overflow popup.
Regression introduced with 2023.1.117
Note: As of 2023.1.117, the DropDownList is no longer overflowing, despite overflow: "always". As of 2023.1.425 the DropDownList is again displayed in the overflow, and can no longer be opened.
The overflow popup closes
The overflow popup should remain open so that you can interact with the DropDownList