*How to reproduce:*
# Create any Project
# In the Project Browser click the "Open in Search" button
# Observe the Search field
# Click the "Open in Search" button again and observe the Search field and the Second Search Window

*Actual results:*

On 2022.3 LTS, a second Search Window is opened

On Unity 6, a second Search Window is opened
The Search field is populated with the string ": p", the second opened Search Window shows Error "Unknown filter "p"."
The string in the Search Field isn't deleted when closing a single Window, but if a Search Window is already opened and you open another one, a second ": p" string is entered, and if the user then closes both of those Windows, only the second ": p" string is deleted from the Search field

*Expected results:*

Previously, no second Search Window was opened if there was one already opened, but this might be a design change?

The Search field shouldn't be populated with a ": p" string as this breaks opening multiple Search Windows from the Project Browser (This only happens on Unity 6)

*Reproducible with versions:* 2022.3.38f1, 2022.3.45f1, 6000.0.11f1, 6000.0.18f1

*Not reproducible with versions:* 2021.3.38f1, 2022.3.37f1, 6000.0.10f1

*Tested on (OS):* Windows 11, macOS Sonoma M1