Duplicate text line in example/mouse.zig

Checking #117 fix I found that help text duplicates after clicking and hovering. 
I am not sure what is happening here. Is there a way to enable logs?

<img width="572" height="235" alt="Image" src="https://github.com/user-attachments/assets/a4ce45f6-6ab5-4156-9ef6-ba7f5093a71d" />

How to reproduce:

1. Hover to the first button
2. Click on the second button
3. Hover to reset button