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[UMG] Spinbox unclickable after forced lost focus

System: Windows 10

Engine Version: UE 4.17.2

If the user focus is lost/changed while mouse dragging a UMG spin box the spinbox becomes unusable. (Unable to click/drag with the mouse).

The user focus can be lost (before letting go of the mouse button) in 2 ways:

  • by calling: Set Input Mode.

  • Alt-Tabbing

I managed to reproduce this in a clean 4.17 windows project.

Steps to reproduce:

  1. Create a new project

  2. Create an UMG widget blueprint

  3. Drag a spin box onto the canvas

  4. Save & Compile

  5. In level blueprint add the attached blueprint code. (Create, Add widget, Set input mode)alt text

  6. PIE

  7. Start dragging the spinbox and press Z (or alt-tab out) while still dragging.

  8. Try to edit the spinbox.

Result: The spinbox cannot be edited anymore.

Expected Result: The spinbox should be editable.

I have also attached a clean project reproducing the bug (steps 1-5). Project

Product Version: UE 4.17
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asked Nov 25 '17 at 03:29 PM in Bug Reports

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BinaryRK
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avatar image Everynone Nov 25 '17 at 04:11 PM

edited: I can confirm this happening on 4.18.1 as well. The spinbox is unable to regain focus if it was lost while spinning.

Good catch.

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1 answer: sort voted first

Hello,

Thank you for the report. I was able to easily reproduce this issue in 4.16.3, 4.17.2, and 4.18.1. I have logged the issue, which you can follow if you'd like, here: https://issues.unrealengine.com/issue/UE-52802

If there is anything else that I can help you with please let me know.

All the Best,

Natalia

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answered Nov 28 '17 at 09:43 PM

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Natalia Q ♦♦ STAFF
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