Widget buttons doesn't respond in secondary PIE window

Development Programming & Scripting UI
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1

In the main menu my buttons doesn’t work anymore (had no problem with 4.13.1), but only in the 2nd PIE window. In the 1st one it works as intended, but in the 2nd they don’t even change their color (when pushed).
The problem happens with Auto Connect turned on and off too.

Update:
They don’t respond in standalone build either!

2

Hello CrimsonHawk,

I have few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. Can you reproduce this issue in a clean project?
  2. If so, could you provide a detailed list of steps to reproduce this issue in a clean project?
  3. Could you provide screen shots of any blueprints/widgets that may be involved with this issue?
3
  1. Nothing special, just a normal main menu, but here it is for you:

111901-menu.png
111901-menu.png866×354 43.6 KB

A new clue: If I don’t click in any of the PIE windows, the buttons DO highlight in every window when I hover my mouse above them. Then I click in ANY of the windows, lets say 1st window (which locks the mouse, maybe here lies the problem), then that window works with the menu, but after trying to change to another PIE window, that’s menu stops responding (doesn’t detect the mouse?). And even after I change back to the 1st PIE, that’s menu is also irreponsive.

I’ll try to reproduce the problem, but my guess is that the 4.13.1 → 4.14.P conversion caused this anomaly too (as the other bug in my other question).

In the case I won’t be able to reproduce the problem, should/can I just share a link with you to the original project?

4

Okay, so here are the things:

  1. I Could recreate the problem in blank 4.14.P project. But I can’t zip up the project, because of the problem, found here:
    https://answers.unrealengine.com/questions/510998/414-rebuild-solutionproject-fails.html
  2. I would have just past in the bug’s link ( Unreal Engine Issues and Bug Tracker (UE-37616) ), but it doesn’t work apparently.
  3. However, here is the Project, zipped by hand.

The steps were the most obvious:

  1. New WidgetBlueprint, Border, Vertical Box, Button, Text.
  2. New PlayerController, EventBeginPlay-CreateWidget-AddToViewport-SHOWMOUSECURSOR (could cause something?).
  3. New GameMode: Set PlayerController class to mine.
  4. Start in PIE, hover mouse over buttons → they get highlighted.
  5. Click in somewhere in the PIE window → buttons don’t respond anymore.
5

After testing the project provided. It appears that this is working as intended. The input mode appears to be switching to game only. If you make sure that your input mode is set to focus UI ( Set input mode UI only for example) you will notice that you will be able to interact with the UI again. I hope that this information helps.

Make it a great day

6

I’d like to disagree. In 4.13.1 my main menu worked flawlessly, and now it’s not. And how now it works is very inconsistent, since once, I can press buttons, then I can’t. If the window is “out of focus” and I click first exactly on the widget, the buttons DO work, and the mouse is NOT locked to the game area. If I dare to click anywhere else, the menu becomes unusable, and the mouse is locked.

Here is a video about it:
The zip of the video

(Sorry for the .webm format, VLC player should be able to play it)

7

After further testing I was able to see the issue that you are talking about. I have written up a report and I have submitted it to the developers for further consideration. I have also provided a link to the public tracker. Please feel free to use the link provided for future updates. Thank you for your time and information.

Link: Unreal Engine Issues and Bug Tracker (UE-37698)

Make it a great day