I've come across what appears to be a worrying problem when exporting videos - so, when rendering the final version of a video. Playing back the final version of the video, the vertical alignment (and it only seems to be vertical) of some (but not all) the text has dropped down. I think it is only affecting the text.
In the case of a video I have just put together, different text is revealed at different points in the video and its positioning needs to be precise. It all looks absolutely fine, and exactly as I have set it up, when playing it back in the editor, but the rendering process is changing how it looks in the final exported video.
I have now tested this three times and I get the same result. Worrying.