Oblique startup warning in R

Question

When I launch R 4.3.1 on Ubuntu 22.04.3 I get the following error:

During startup - Warning message:
In sys.load.image(".RData", FALSE) : non-uniform 'Rounding' sampler used

How come? More importantly, how can I learn to answer "How come" for myself in cases like this?

Answer 1

Per comments from @jay.sf and @MrFlick, the issue was apparently with objects from a previous session being stored in an .RData file and loaded on launch.

Removing the .RData file resolves this warning.