Issue with input/touch for local multiplayer

Hello,

I have a question that is kinda very specific. I am currently working on a project with some custom split screen for 5 players (but I guess this does not really matter). The case is that we have local multiplayer and split screen. There are some different widgets on each screen. And there is an issue with a touch. We are using 5.1.1 version and the touch does not work in standalone mode or in package. However it works normally when running it in editor (PIE). One person tested it on other engine versions and it also does not work on 4.26, but it works for example on 4.23. In the end what I would like to achieve is that I would be able to click on each button for each “player” screen.
Does anyone ever have such case and might know what is going on.

In this example, only left-top button works.

Here is an example how we are creating the players.