Can I return to Thailand while my visa application is pending in Vietnam?

The consensus is that while applying for a visa from outside Thailand (e.g., Vietnam), you should remain in the country where you applied until your application is approved. Multiple comments highlight that returning to Thailand during this period could lead to application rejection, as Thai authorities can check if you're in the country when processing your application. It's advisable to wait in Vietnam to avoid complications, as being in Thailand might raise doubts regarding your application.