The bug of the straight lines is no more reproducible on my workstation whereas the OS has not been updated since the last time I tested LWJGL. Good job!
I don't know how you fixed this bug but it is nice
I will test on my own computer at home to check if it is completely fixed.
I'm currently testing other older LWJGL applications to determine when it has been fixed.
personally, i have written an interface for all GL functions and can now choose between a jogl and lwjgl implementation, i could also add a new binding easily, if one would exist.
behind that, i mostly choose LWJGL, since it just seems to be faster, the framerates are not so spikey and it has that high precision timer!
The native canvas of JOGL 2 gives interesting performance and I don't have a spiky frame rate even with JOGL 1.1.1a as far as I know.