Added changelog entry

Author: Secticide

Packages/com.unity.inputsystem/CHANGELOG.md

@@ -37,6 +37,7 @@ however, it has to be formatted properly to pass verification tests.
 - Fixed an editor crash caused by input debugger device state window reusing cached state when reconnecting Stadia controller. [ISXB-658](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-658)
 - Fixed an issue where batch jobs would fail with "Error: Error building Player because scripts are compiling" if a source generated .inputactions asset is out of sync with its generated source code (ISXB-1300).
 - Fixed multiple `OnScreenStick` Components that does not work together when using them simultaneously in isolation mode. [ISXB-813](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-813)
+- Fixed an issue in input actions editor window that caused certain fields in custom input composite bindings to require multiple clicks to action / focus. [ISXB-1171](https://issuetracker.unity3d.com/product/unity/issues/guid/ISXB-1171)
 
 ### Changed
 - Changed location of the link xml file (code stripping rules), from a temporary directory to the project Library folder (ISX-2140).