1. Fix regression of multi-edit cursors placed wrongly issue. (Fix #15126)
2. Fix multi-editing not showing multiple cursors in dark mode. (Fix #15075)
3. Add auto-completion for Go & Raku, function list for Raku. (Implement #15128)
4. Fix symbol ‘&’ not showing in Document Switcher. (Fix #15117)
5. Allow syntax highlighting for custom tags in HTML. (Fix #15093)
6. Fix dialogs out of screen problem. (Fix #11240, #14913)
* Notepad++ v8.6.6 (Release Date: 2024-05-10) bug-fixes & enhancements:
1. Update to scintilla 5.5.0 & Lexilla 5.3.2. (Merge #15042)
2. Fix crash when crossing the 2GB file size threshold. (Fix #14944, #14981)
3. Fix a performance issue due to URL recognition. (Fix #13916)
4. Update to nlohman json 3.11.3. (Merge #15041)
5. Fix multi-edit resists escape after typing issue. (Fix #14649)
6. Make F3 & Shift-F3 work in Find Replace dialog. (Fix #2138)
7. Allow Ctrl-TAB to switch tabs in FindReplace, PluginAdmin and UDL dialogs. (Fix #7932, #14975)
8. Add programming language support for Go & Raku(Perl 6). (Fix #8090, #4465)
9. Fix user defined auto-insert not working issue. (Fix #3171, #8063, #12547, #14831)
10. Enhance GUI: resize checkboxes/radio buttons as text length needs. (Fix #15006)
11. Enhance GUI: make sizing arrows more coherent in Find dialog. (Fix #15099)
12. Fix URL enclosed in apostrophes or backtick not working issue. (Fix #14978, #14323, #14212)
13. Fix wrong dropped file view issue. (Fix #14951)
14. Fix Korean(한)/English(영) key not working regression. (Fix #14400, #14973)
15. Fix the tab labels of some dialogs being cut in Dark mode. (Fix #11012)
16. Fix close button disappeared issue in Find Replace dialog. (Fix #14940)
17. Apply dark theme to checkbox buttons on Windows 11. (Fix #14929)
18. Fix menu bar cluttered in Dark Mode issue. (Fix #10130)
19. Fix Debug Info minor display regression. (Fix #14921)
20. Enhance Lua language syntax highlighting. (Fix #7615, #15081)
21. Improve the function list support for Ada. (Fix #14908, #14687, #14498)