When I edit the text in figure window I got the text in the figure when i exit from editor I got normal text .

[Walter Roberson]

Are you trying to insert text that uses characters from positions above 127 ? Which MATLAB release are you using?

[Dr. Shankar Goud]

I am Using MATLAB2024A

[Walter Roberson]

Are you trying to use extended characters, or just characters in the regular ASCII character set?

[Rik]

Try to make a MWE so we can run your code without any other dependencies and can reproduce your issue. You can run your code directly in the editor.