Hi guys

Seems to be I found the bug.

Test case:
- create new project on Windows
- put the groupbox on the form
- set to Groupbox.ParentBackgroud property value False and save project
- open project on Linux

Let's get error (see attachment):

Stream=TForm1: Root=:TForm1
Component Class: TGroupBox
Error reading GroupBox1.ParentBackground: Unknown property: "ParentBackground"
Stream position: 199

I think this is a bug

/-- with best regards, Zoltanleo aka Док/
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I'm use fpc trunk and Lazarus trunk (rev. 65050)

Link to screenshot

https://imgur.com/RFC3Ckm

Solved

https://forum.lazarus.freepascal.org/index.php/topic,54283.msg403257.html#msg403257