Weird behavior in trace() debugging in RStudio

I'm trying to use trace() for debugging in RStudio.

From a fresh R session, I entered

trace(, recover)
aov(yield ~ N + K + Error(block/(N + K)), data = npk)

The debugging menu shows up for me to select a frame.

I entered 1 to select the top-most frame. However, as soon as the first frame is selected, RStudio automatically enters two keystrokes of n which sends me back out to the frame selection menu.

I tried the same code in R command line and it works as intended.

I'm using the latest RStudio version (1.1.463).

Thanks for the bug report! Could you file this on our issue tracker?

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