Since the issue persists, I would like to bump this question.

Hello, I have expeirenced the same problem and worked it out.

2022 is Zindex, and 2024 is sorted alphabetically by compiled Action ID, please refer to my buttions, same order in 2022 and 2024.

You need to add prefix like mine:

Note: The first 6 names in the "Button" column are translated from Chinese for reference only — the actual Action IDs embedded in the compiled plugin are the strings shown in the "Source ID" column, which are identical to the "Compiled ID" column.

Hi Mike, first of all, thank you for your reply.

I need some clarification: I assume that the compiled Action ID is the ID passed when defining the Action attribute. So, the first button to appear can be e.g.
[Action("01_LaunchAction", Icon = "Launch")]

However, this does not do the trick in my ribbon. Is maybe my assumption wrong and another ID is meant?

Dear Daniel Brockmann  , Patrick Andrew Hartnett  or Robert Cornea , I am not sure if this is a known issue in Studio 2024 or if it is environmental? Could you reproduce it?

Daniel

Hi Dino Azzano , 

       I've investigated the issue (internal ticket LG-54953) and found the problem. Would you be kind to pick up Studio 2024 CU 5 Beta 2 when it will be released and double check that everything works fine on your end.

Best regards,

Cornea Robert 

Hi Robert Cornea , thank you for looking into this matter and finding the problem. Upon release of Studio 2024 CU 5 Beta 2, I will be re-testing my plugin.