Table in a box has narrow columns :-(

[tfcroft4]

I am building a GUI with a table.
If I place a table in a box and add the box to the main window the table columns are compressed.
If I add a table directly to the main window the table expands as expected.
Perhaps I have missed something.
Is there a container setting needed to allow the table to expand?
(direction setting does not seem to have any effect)
I am running on Windows 10. beeware installed as per Getting Started tutorial on 19/11/2024

main_box = toga.Box(style=Pack(direction=COLUMN))
data_box = toga.Box(style=Pack(direction=COLUMN, padding=5 , background_color=BLUE)) 
data_table = toga.Table(style=Pack(flex=1,padding=5),
        headings=["Name", "Age", "Planet"],
        #accessors={"Name", 'character'},
        data=[
        {"name": "Arthur Dent", "age": 42, "planet": "Earth"},
        {"name": "Ford Prefect", "age": 37, "planet": "Betelgeuse Five"},
        {"name": "Tricia McMillan", "age": 38, "planet": "Earth"},
        ]   
        )
data_table_2 = toga.Table(style=Pack(flex=1,padding=5),
        headings=["Planet","Name", "Age",],
        #accessors={"Name", 'character'},
        data=[
        {"name": "Tricia McMillan", "age": 38, "planet": "Earth"},
        {"name": "Ford Prefect", "age": 37, "planet": "Betelgeuse Five"},
        {"name": "Arthur Dent", "age": 42, "planet": "Earth"},
        ]   
        )
data_box.add(data_table)
main_box.add(data_box) #compressed table width
main_box.add(data_table_2) #full table width

[freakboy3742]

That definitely sounds like a bug to me. You definitely haven't missed a "magic setting" to make the window expand; it should be expanding columns to fill (as it does in the second example). I've logged #2974 to track this as a bug.

[tfcroft4]

Thanks for the prompt response.
So far this has been the only issue in building the GUI.
Thanks for your work.
Ted