[Lazarus] Is this bug? in debug mode

[FreeMan]

In debug, I move mouse for look for value of classproperty (any) I get 
this error.
Tmem_Stream = Tmemory_Stream;
Tmem_Stream.Position  error popups. not only this class or this 
property. Excecially variable defined diffrent unit.


While executing the command:

"TGDBMIDebuggerInstruction: "ptype Tmem_Stream.Position", 
[ifRequiresThread, ifRequiresStackFrame] Thr=1 Frm=0"

gdb reported:

"&"/build/buildd/gdb-7.6.1/gdb/parse.c:588: internal-error: 
mark_struct_expression: Assertion `parse_completion && 
expout_tag_completion_type == TYPE_CODE_UNDEF' failed.\nA problem 
internal to GDB has been detected,\nfurther debugging may prove 
unreliable.""


Thank you

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