This may not be fixable for this release, but...

form:validation only provides validation for data entry by <form:formatted-text>

That is to say that validation is not provided for <form:number>, <form:date>, <form:time>, <form:value-range>.

Note that form:max-value sets an upper bound for <form:number>, <form:date>, <form:time>, <form:value-range> and, of course, <form:formatted-text>.

Note that form:min-value sets an upper bound for <form:number>, <form:date>, <form:time>, <form:value-range> and, of course, <form:formatted-text>.

So, validation, at least in the sense of 19.315 is something different from setting upper and lower boundaries.

Problem: There is no validation for <form:number>, <form:date>, <form:time>, <form:value-range>.

Problem: Don't define what happens if min/max values are exceeded.

As I said, this may not be fixable now but we need to be aware of it.