VCCB should be from 2V3 to 5V5 according TXS0104E datasheet
In schematic (v0.6) the chip U16 has a pin (number 14) called VCCB, according to datasheet of TXS0104E, is 2.3V to 5.5 tolerant, but it is connected to 1V8. Furthermore, VCCA should be less or equal than VCCB.
Maybe VCCA and VCCB should be reversed.
Edited by Bosco G. G.