Possibly a missing event handler. Note this might be swap-chain related but should also hit other cases if possible, e.g. HDR display detection currently only occurs on device init.
Launch QAGame exclusive fullscreen on a single connected display.
Disconnect then reconnect the display cable.
Note screen is black.
Alt-tab out and back into game.
Note screen is restored.
Screen should restore upon re-connection.
EDIT: Also reported with multiple displays.
See UDN for more details: https://udn.unrealengine.com/questions/351564/fullscreen-game-window-goes-black-when-losing-the.html
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-42858 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 4.18 |
| Created | Mar 14, 2017 |
|---|---|
| Resolved | Aug 18, 2021 |
| Updated | Aug 18, 2021 |