[Bug] When opening text files it shows them twice

[Wilk-22]

Describe the bug

When opening any text file, contents are being copied and added to the end of the document second time

To Reproduce

Steps to reproduce the behavior:

1. Open any text file
2. Scroll down
3. See that contents are copied and show twice

Expected behavior

When opening a text file, show only the real contents, not copied twice

Screenshots When saveing:

After opening again:

Desktop (please complete the following information):

 - OS: Windows 10
 - Browser: Firefox 128.0.3
 - CasaOS: v0.4.10

[fanmingming]

我也有同样的问题。

[Matteo-Nigro]

I confirm the presence of the bug.