The top SDBGrid table from AlphaControls 10.27
Average DBGriEh from the EhLib 5.6 Build 5.6.215 package
Lower NextDBGrid6 from Bergsoft Next Suite 6 (VCL), v6.0.65
All tables are configured by default.
Database:
FireByrd 2.5 embeded
The component of access to the database is InterBase 6
I also tried other components:
ZEOSDBO-7.1.4-stable
FIBPlus_7.4
I tried different versions:
Berg Components Suite 5.9.10.1
Berg NextGrid 5.6
Berg NextGrid 5.10.50
Tried Delphi 7, Delphi XE7
The situation is the same - NextDBGrid behaves not adequately when scrolling with the mouse and moving with the PageDn / PageUP keys.
The database, sample, source - attached.