This is to say the least, unexpected behaviour.
Given that one is expected to post questions on meta, which adhere to certain guidelines. The fact that the app posts directly to meta rather than a jira is bad/surprising behaviour.
There is no prompt for a search of dupes like in a standard question post, nor are possible dupes displayed.
If someone marks this as a dupe, that would rather prove my point...
Can the screen be changed to make it clear what will happen and, ideally, include a dupe search?