Hi Ahmet,
Greetings from Syncfusion support
We have reviewed your query and understand that
you expect the left panel to maintain its size consistently. To better assist
you, please provide specific details about the scenarios in which you expect
the left panel to remain the same size, such as during window resizing or panel
resizing and sample code. These details will help us provide a prompt and accurate solution.
Regards,
Vishwanathan