SUMMARY I'm not sure whether this counts as a bug or feature request since I'm not sure whether this was intentional or not, but the transform tool is very hard to use when it comes to touch interactions (in other words, using your finger on the tablet screen). When using Free, Perspective, or Warp on your layer's contents, if you try to drag the points with your finger, you likely won't get the intended effect. For example, dragging a specific anchor point in Warp, or making your selection thinner in Free. If I try to make it thinner in Free with touch, the tool will attempt to rotate instead. BUT if I do the same thing with the Samsung S-Pen, it works perfectly. Or if I try to drag a specific anchor point, it won't drag the point I put my finger on. Again, it works perfectly with S-Pen. I doubt it's even a matter of whether my finger touched the point accurately, because even if I use Android's magnifier tool to zoom in real close on the screen and touch the point perfectly, the finger touch still doesn't result in the intended effect. SOMETIMES I get the intended effect with touch interactions, but it's more misses than successes that I can't trust to get consistent results. In short, make touch interactions work just as well as if I was using the Samsung S-Pen, and I'm a happy person. SOFTWARE/OS VERSIONS Android 13 Both Krita 5.1.5 and 5.2 RC1 ADDITIONAL INFORMATION
Okay, actually, yeah, this one's a bug, because I just realized how anchor points work in the Windows version. In Windows, you tap an anchor point (it becomes highlighted), you lift your finger, and THEN you drag the anchor point. On Android, the anchor point never becomes highlighted upon tapping it, making points frustratingly difficult to move via finger. This needs fixing to respond like it does on desktop.
A temporary workaround for Android users without other physical accessories who wish to accurately activate anchor points is to use the Android apps Shizuku and Real Mouse. https://play.google.com/store/apps/details?id=moe.shizuku.privileged.api https://play.google.com/store/apps/details?id=com.redlee90.realmouse This will simulate a real mouse on your Android screen which you can use to click on the anchor points in Krita, after which you can drag with the finger.