Here's something that turned up from time to time.

I type:

. . is in a right triangle.

. . And:

And this is what is produced:

. . is in a right triangle.

. . And:

Note that the first is smaller than the second one,

. . Yes, it's a trivial difference, I agree.

Quite by accident, I found a correction for it.

Precede the first with a.space

. . Type: . is in a right triangle.

. . and we get: . is in a right triangle.

Always glad to be of service . . .