Yes, many (all?) Godox transmitters have this issue. Some more recent transmitter models have a custom function to designate either the normal range of operation or a "close-up" range.
On the X1TC, the "close up" range is enabled, if memory serves, by
1. powering off
2. holding down the Test button and while doing so,
3. powering on
I'm not sure which firmware revision introduced this feature, so if it doesn't appear to work and you're on an older firmware, updating would be good.
I haven't use the Godox stuff for over a year -- don't use flash much, and if I do, usually a single on-camera unit bounced does the trick. But I had an awards banquet in a huge hall where it would have been nice to setup some remote fill flashes in the corners. But I could not get the Godox stuff to cooperate in any form. Could not using the X1T, not using a tt685 as an RF or even optical master. I'm not sure if that short range vs long range option would have helped, because the corners were up to 40m apart.