Hi Posket,
Thank you for your interest in Syncfusion Products.
We have recently fixed the issue with searching text in Header and Footer. Please report this issue through Direct Trac Developer Support System
https://www.syncfusion.com/account/login?ReturnUrl=%2fsupport%2fdirecttrac%2fincidents ), so that we could provide you the patch for this issue fix. Here you can able take the advantage of the expertise of a dedicated support engineer and a guaranteed response in time. We hope you will take the advantage of this system.
Please let us know if you have any questions.
Regards
Abhishek