I switched back to 10.2.6 and it works as well.
I think this is due to the "last minute" fix in RAqua now using idle timers because of too much cpu usage.
Some "mouse" trick is needed though. If you want to test it you can just try
library(tcltk) demo(tkdensity)
press return and wait for quartz device to show the density plot.
Then to interact with the widgets just click outside R (everywhere but not windows related to R) and click on the tk-window to activate it. Now you can interact with the widgets for "some time", which means that after a while you loose the control and you need to re-do the trick (click outside R and reactivate the tk window).
BTW, doing this (which is far from being even suboptimal) you loose RAqua menus.
I think RAqua menus should be reestablished if I force the redrawing after every activation of the RAqua Console window.
The other problem (loose of control of tk window) seems to come from the bliking cursor on the RAqua Console.
I'll try to change/fix the last two points in R-patched and update you on this history.
Of course if you have other ideas in the meanwhile let me know.
stefano
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