As described on https://randomascii.wordpress.com/2012/03/08/float-precisionfrom-zero-to-100-digits-2/, to uniquely identify a single, it is required to show 9 decimal digits (and 17 for double). Currently, watch in BASIC IDE shows only 7 decimals for single, so e.g.
> dim s1 as single, s2 as single, d as double
> s1 = 1.1754943
> s2 = 1.1754944
> d = s2 - s1
would show s1 and s2 *both* as 1.175494, while d would contain 1.192E-07, showing that the shown precision is not enough.
The suggestion is to show 9 significant digits for single values.
I confirm this. The debugger shows only 6 sing after dot.
Adding Arnaud. Maybe he wants to take a look.