Can't change a style name in LO Draw

[NikolayLibre]

Version 5.0.6.3. Operating system Windows 7.

1. I create a new style in LibreOffice Draw for my mindmap.
2. I change the style name that i created. For examle from “Default-1” to “Connector-1”.
3. Save the file “.odg”.
4. Reload the file. The style name steal “Default-1”.

In other applications this problem is not appear.

Also, i have a trouble with shortcut “repeat”. I switch a combination from default to “Alt-A” and “Ctrl-A”. I try this with enlgish, russian and german language.