Broken /title Command (subtitles)

     I have been making a map for Bedrock Edition for years now, and suddenly when I tried using the /title [Variable Here] subtitle [String], it just won’t display. I wondered if this bug had affected the normal version of the /title command, so I typed “/title @p title hi.” I noticed that the previous string I had inputted for the subtitle command appeared as well as the title command I had just performed now. I have no way to fix it, and it only just started happening. It was working fine earlier. (In the same update) but now it’s not.