Thanks. Was the multi-select field originally a drop-down field? If possible, could you put your form back in the state where you were unable to move the text field?
Updating the thread with a description of the issue and the resolution.
Given the form shown below, the goal was to have "Field 2" align vertically with the bottom of "Field 1".
Currently it is not possible to change the vertical alignment of items within a row - they are always aligned at the top. We will consider this enhancement for a future release.