The Binding of Isaac: Rebirth doesn't run on Wayland

**Game information**
The Binding of Isaac: Rebirth

**Distribution name and version where applicable**
Fedora Silverblue 28 and 29

**Flatpak info**
```
~  flatpak --version
Flatpak 1.0.2
~  flatpak --gl-drivers
default
host
```

**Problem description**
Game doesn't run, without any visible errors.

Output:
```
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to ProcessingInstallScript with ""
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to SynchronizingCloud with ""
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to SiteLicenseSeatCheckout with ""
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to CreatingProcess with ""
GameAction [AppID 250900, ActionID 1] : LaunchApp waiting for user response to CreatingProcess ""
GameAction [AppID 250900, ActionID 1] : LaunchApp continues with user response "CreatingProcess"
Opted-in Controller Mask for AppId 250900: 4
Game update: AppID 250900 "", ProcID 6144, IP 0.0.0.0:0
>>> Adding process 6144 for game ID 250900
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to WaitingGameWindow with ""
ERROR: ld.so: object '/var/home/exalm/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/var/home/exalm/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
ERROR: ld.so: object '/var/home/exalm/.var/app/com.valvesoftware.Steam/.local/share/Steam/ubuntu12_32/gameoverlayrenderer.so' from LD_PRELOAD cannot be preloaded (wrong ELF class: ELFCLASS32): ignored.
GameAction [AppID 250900, ActionID 1] : LaunchApp changed task to Completed with ""
>>> Adding process 6145 for game ID 250900
Game update: AppID 250900 "", ProcID 6145, IP 0.0.0.0:0
Game update: AppID 250900 "", ProcID 6145, IP 0.0.0.0:0
Setting breakpad minidump AppID = 250900
Steam_SetMinidumpSteamID: Caching Steam ID: 76561198132369043 [API loaded no]
Game removed: AppID 250900 "", ProcID 6145
No cached sticky mapping in ActivateActionSet.
```

**Does this issue reproduce with native Steam**
Have not tested

No source files or tests are named. Start by reproducing the launch failure on Fedora Silverblue with Flatpak Steam under Wayland, using the provided Steam output and comparing with native Steam as suggested. Done means the game launches successfully in the affected Wayland setup and the cause or required project change is documented.

Written by the indexing model from the issue text.