Cauldron water quickly flashing white is no longer an issue as of Preview version 1.20.0.25. However water in cauldrons now appear as a dark lava texture in version 1.20.0.25 (see Cauldron_water_1.20.0.25.png attachment).
affects preview 1.20.0.25 and stable 1.19.83
I added a world where I experienced this issue
Affects version 1.19.73 and preview version 1.19.80.24
Cauldron water quickly flashing white is no longer an issue as of Preview version 1.20.0.25. However water in cauldrons now appear as a dark lava texture in version 1.20.0.25 (see Cauldron_water_1.20.0.25.png attachment).