As you try to input text into a text annotation in Camtasia 9 and later only one letter will show up.
This is a known issue that can occur when having a right to left language installed on the PC. The following are possible workarounds to the problem.
- Copy and paste text from MS Word or another text editor into the annotations using CTRL + V
- Uninstall the right to left language
- Use a legacy annotation as shown here