The very first frame on the Animation Docker cannot be moved or copied by respectively dragging or ctrl+dragging. Reproducible: Always Steps to Reproduce: 1. Create some frames. 2. Select the first frame. 3. Try to move if by dragging. Or try to copy it by ctrl+dragging. Actual Results: Upon trying to move the first frame, the selection action is triggered, despite starting from a "filled" frame. Upon trying to copy the frame with ctrl+drag, no frame is copied at all. (Caveats in additional information.) Expected Results: The frame should be movable like any other frame. The frame should be copyable like any other frame. As already reported in the bug "Krita Animation Beta - Ctrl+drag to Copy Single Animation Frame Not Working" [ https://bugs.kde.org/show_bug.cgi?id=356056 ], trying to copy a single layer fails regardless of whether it's the first frame or any other. However, since copying multiple frames works as expected, these tests were done by selecting the first frame as well some additional ones. In every case, the first frame is simply not moved or copied, but the other frames are.
EDIT: Instead of "Animation Docker" I meant "Timeline Docker". I apologize for the error.
As of the animation beta 2.9.10, the first frame can be moved and copied. But moving the first frame leaves a blank frame on the original position, instead of an empty frame, unlike every other frame. I will make a new bug with the changed behavior, and am marking this as resolved.
P.S: Bug #356056 [https://bugs.kde.org/show_bug.cgi?id=356056] where single selected frames cannot be copied with ctrl+drag still remains for the first frame. For the test that marked this issue as resolved, I selected multiple frames alongside the first one and than ctrl+dragged to copy them, and this behaved as expected.
Reported remaining behavior as bug #356540 [https://bugs.kde.org/show_bug.cgi?id=356540]