In data Assist 2 there is a repeating table behavior for repeating a region horizontally and vertically.
It does use the While .... Wend syntax, but i don't think that is causing your issue.
In all honesty, I dont know why w3schools is recommending not to use the while ... wend syntax, I have used it successfully for about 12 years now without having any issues.
assuming that you add the while condition of the do ... loop statement at the beginning
Do While i < 10
instead of adding the While statement to the Loop
Loop While i < 10
the only difference in using the while ... wend syntax:
While i < 10
is that you drop the word "Do" and replace "Loop" with "Wend"
I cant see how using while ... wend would cause the problem you are reporting.