[Lazarus] Lazarus code editor improvement?

[Martin Frb]

On 02/11/2019 15:34, Bo Berglund via lazarus wrote:
> On Sat, 2 Nov 2019 15:04:15 +0100, Sven Barth via lazarus
> <lazarus at lists.lazarus-ide.org> wrote:
>
>> Bo Berglund via lazarus <lazarus at lists.lazarus-ide.org> schrieb am Sa., 2.
>> Nov. 2019, 14:59:
>>
>>> If I am in a tab to the right (not the left-most tab) with the cursor
>>> anywhere in the code and I want to add say a { character, I need to
>>> press AltGr (the right hand Alt key) and the 7 key. This normally
>>> results in a { character being output at the cursor.
>>>
>>> But in Lazarus the focus immediately shifts to a different tab when
>>> AltGr is pressed!!
>>> How did that happen? All European languages to my knowledge uses the
>>> AltGr key to compose special chars like {[]}\|~
>>> Why is Lazarus stealing the AltGr key?
>>>
>> Check the key mappings in Lazarus' options.
>>
> Nothing to see there (don't even know how the AltGr key would be
> listed).
> But now I have tested all threee versions I have on the RPi4 (2.0.2,
> 2.0.4 and 2.0.6) and all of them do this...
>
Alt - n (1-9) is "goto source editor n" (switch to tab n)

Why this triggers on altgr for you, I am not sure