Height of fields popup need to be adjusted.

Hello, Nagaraj,
Thank you for reaching out to us.
Changing the height of the Field List at runtime is not implemented in the current version of Flexmonster. As a workaround we can recommend pre-defining its height by using CSS.
Please, check out an example we have prepared for you: https://jsfiddle.net/flexmonster/okarmwd0/.
Learn more about appearance customization by following the link: https://www.flexmonster.com/doc/customizing-appearance/.
Feel free to contact us in case of additional questions.
Regards, Illia

Hello, Nagaraj,
We are pleased to inform you that now it is possible to resize the Field List vertically to fill the entire height of the grid container.
This is available in the 2.8.21 version of Flexmonster: https://www.flexmonster.com/release-notes/.
You are welcome to update the component: https://www.flexmonster.com/doc/updating-to-the-latest-version/.
Please let us know if everything works.
Best regards,
Illia

Hello, Nagaraj,
We are wondering whether the recently introduced feature with the Field List resizing works well for you.
Our team is looking forward to hearing your feedback.
Regards, Illia