18w10a also does this. I've uploaded my launcher log to see if it will shed some light on this. There are errors being shown in there that aren't shown as actual errors when viewing the output via the launcher.
Persisting for 18w09a. Can launch without any resolution args but can't customise resolution without it crashing back to the launcher. Zero output or indication as to why this is. Please fix this as it's been an issue throughout and I'd like to play these snapshots.
Kalorii
18w10a also does this. I've uploaded my launcher log to see if it will shed some light on this. There are errors being shown in there that aren't shown as actual errors when viewing the output via the launcher.