geany version 1.32, OS version macOS Sierra, 1.12.6.
Different from geany's behavior under Fedora, where selecting text and drag-&dropping it to another part in the document, moves the text (like Ctrl+X, Ctrl+V), under macOS, the text is always _copied_ (like Ctrl+C, Ctrl+V). Pressing any of the many modifier keys mac keyboards have to offer (Ctrl, Cmd, Alt) during the drag-&dropping doesn't change this behavior (despite [this entry in the manual](https://www.geany.org/manual/current/index.html#drag-and-drop-of-text)).
Yes, this seems to be a bug of the Mac version of GTK. This particular bug is also tracked here:
https://github.com/geany/geany-osx/issues/4
Closing as this is a duplicate of
geany/geany-osx#4
Closed #1701.
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