I’ve been making Windows touchscreen applications in Unreal for a while now. We recently started a new project in 4.25 and I’m suddenly getting this error whenever I have more than one finger touching the screen:
LogSlate: Error: SlateUser 
notified of a touch starting for
pointer [-532247552] without finding
out it ever ended.
Some things I’ve tried:
- Opened an empty project in 4.25 and confirmed I still receive this error with multiple touches
- Opened an empty project in 4.26 and found the error occurs there too
- Gone back to 4.24 and confirmed that this error doesn’t occur
This has broken any sort of ‘pinch’ functionality we had in the project. Has something changed with how touches are handled since 4.24? Any help would be much appreciated!