Well I checked my three pots that were watered at 0600 today . I checked them at 1830 once I got home from the business.So the pots were sitting in drip trays for 12.5 hours and no water dripped out of each pot ( each pot was lifted and tilted in all directions ) the drip trays was empty by my wife .
I have no problem doing exactly what I doing right now and suggest you can try this method yourself and come to your own conclusion
I watered my ficus thoroughly via immersion and set it back up on the bench. I came back a couple hours later. No water was coming out of the drainage holes as the pot sat level on the bench. I picked up the pot and held it tilted at an angle. Moments later, water started pouring out of the pot, as I knew it would, as I have seen it do thousands of times.
Either you didn’t water the tree thoroughly, didn’t tilt the pot at a steep enough angle, didn’t hold the tilt angle consistently long enough for gravity to move the water to drain it, or the transpiration rate for your tree is high enough right now that it’s drying out and wicking that moisture up into the rootball within 12 hours (plausible, considering that it’s late spring/early summer in NZ now; could also happen if your trees are underpotted).