Problem description: When using the Custom keyboard in various system application scenarios, a gray area is always displayed at the top of the Custom keyboard. Although the system has been restarted and the Custom keyboard has been restarted, and the pull-down operation has been repeated in multiple system application environments, the gray bar still appears. This problem also has the same problem on other input method software. Reproduction steps: Set the current input method to "CustomKeybaord" In the memo app or any other system app, pull up the Custom keyboard, or switch to the Custom keyboard. Observe whether a gray area is always displayed above the Custom keyboard. Request: I would like to understand whether the current behavior is a bug or if it requires Custom keyboards to adapt their style accordingly. However, I not found that currently unable to modify the style or color of the gray bar in question, and I do not have a suitable adaptation solution at this time. I would appreciate further assistance