Random Characters when editing large files

[Cepu Lamea]

I get this weird characters most of the time after doing several edits to large files (10000+ lines).
When i tried to reproduce it, and take the screenshot, i did this:

1. Generated a large text file
2. Used column select (alt + click) to copy some text from another file (about 1000 lines).
3. Pasted the text in the large text file that i generated, and those weird characters appeared on almost all 10000 text lines.

This bug is really annoying, wasted a lot of my time for nothing, several times, just to get this strange bug and start all over again.
Now i use other text editors when i want to edit large files, because i fear that this bug will happen when i least expect it.

[Claudia Frank]

@Cepu-Lamea

I assume you do have backup functionality activated - it has been reported
that this can lead to such situations.
To deactivate this function goto Settings->Preferences->Backup and untick
enable session snapshot and periodic backup

Cheers
Claudia

[Cepu Lamea]

Seems to work now, thanks for the solution