Could be you have your font size turned up in Windows. Try setting the font size to normal 100% and see if that temporarily fixes the issue.

i am using RHEL 9.
I tried to increase or decrease the font but no affect.

Also it is only happening after the screen "Backup Plan : Backup Source" until this point everything is fine but just when i click continue and go to next screen, i see text and boxes overlapping/ merged into one another.

Seems like a font dpi or font scaling issue. I do not know how to adjust that setting on RHEL, Regardless, any way you can switch to using the WebUI instead of the fat client? https://www.msp360.com/resources/blog/taking-advantage-of-web-access-for-macos-linux/

Any luck with the Web UI or with any adjustments to font scaling in the GUI you are using?

Web GUI works fine.

Thanks for the update.