Brake cleaner (spray) & paint removal

One of things I use brake cleaner for is cleaning up any spillage of brake fluid.
So I was a bit surprised when it looked like the CRC non-chlor (green can) was removing paint.
But I wasn't sure until this past Sat when I gave a quick washdown of the master cylinder after changing brake fluid. The edges of the cover removed all doubt. :(

from now on I'll use the CRC non-chlorinated for washing dust out of drums but not anything else.
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