Imgui: Keyboard navigation two items focused at the same time with Ctrl+Tab

[tomasiser]

Version/Branch of Dear ImGui:

Version: 1.69 WIP
Branch: master (6f80179a1d45753e7065ea7f79360e8e30e5d115)

Back-end/Renderer/Compiler/OS

Back-ends: example_glfw_opengl3

My Issue/Question:

_Consider watching the gif, it is less complicated._

1) Run the example from the latest master.
1) In the ImGui Demo window, check NavEnableKeyboard.
1) Open Widgets -> Basic and click inside Hello, world! input.
1) Now in the other window, double click inside an input (e.g., G of the clear color). This should focus and active the input in the other window.
1) Press Ctrl+Tab to focus to the demo window again.
1) Notice that the focus (blue rectangle) gets into the demo window and the Hello, world! input, but the input box in the other window is still active and all keyboard events get passed to this unfocused input.

Screenshots/Video

[ocornut]

Thank you Tomáš, I confirmed as a bug (it is also a surprisingly old bug).

There's two aspect to the fix,

• The // Apply final focus section of NavUpdateWindowing() should probably call ClearActiveID().
• InputTextEx() should be able to detect better that its active id has been stolen (there are a few tests in there that are rather short sighted), for things like #701 and maybe other reasons, will need to investigate this a little.

Will look it shortly.

[ocornut]

I pushed a fix for this (and wrote a test for it).