[Lazarus] Object inspector bug - exception

[Lubos Pintes]

Hello,
Can you reproduce this? In Lazarus, execute this key sequence:
F11, Ctrl+Tab, Tab, o, n, k
Then this exception is raised:
[Window Title]
Lazarus IDE v1.9.0 - project1

[Content]
List index (-1) out of bounds.

Press OK to ignore and risk data corruption.
Press Abort to kill the program.

[OK] [Abort]
Version doesn't matter, I believe this exists for a very long time, 
although I have fairly fresh version, several days old.