I've encountered a few variations of Basic starting from mid 80's. All of them felt somehow broken and I've had to learn to work around the most serious issues.
Most recently I worked with VB6. In VB6 there is no way of resizing a dynamic array back to zero elements other than dedicating a separate unassigned array type for that purpose. If you did ReDim a(0), you'd get an array with a single element, not an empty one. Of course, ReDimming to -1 does not work either.
You can't really test does an array have zero elements either because there are only functions for finding the first and last index in the array. So, you need to write a function of your own with exception handling that would catch the case where the array has not been added any values to. That way, it'll return 0.
Localization has always provided plenty of error cases. For some reason, if you take code from one system to another, it fails, because in the other system, the decimal separator is different. String to double conversion throws an exception, funny that. At least in DotNet, you could at least make the conversions culture invariant.
It kinda supports object oriented programming, but you need to have each class in a separate file and they come with some limitations.
And I still have not found a way to "continue" a loop, so in that case, I'm forced to use a GOTO in order to skip the rest of the loop and continue with the next iteration.
For scripting, it's almost usable, and easy to debug, but I can't imagine myself writing an application in Basic. Then there are plenty of other options for scripting that easier to work with in my opinion. I haven't really been coding in any form of Basic for almost 2 years, good riddance.