I've found bug in viewer. Note change corrupts list of bugs.
How to reproduce :
1. add some bugs into viewer (20 will be enough i think)
2. change Note for any of the bugs
3. restart viewer
In list of bugs columns texts are messed (like in Type it shows version etc.).
Problem is that when i change Note, viewer will save changes into dat file, but adds more than 3 empty rows as separator between bugs. So i need every time i change note to fix dat file (delete additional empty rows between every bugs).