selenese runner can't nesting while end loop

Consider this code snippet:

• execute script | return 2; | i
• while | ${i} > 0 |
• execute script | return 3; | j
• while | ${j} > 0 |
• echo | i: ${i}, j: ${j} |
• execute script | return ${j} - 1; | j
• end | |
• execute script | return ${i} - 1; | i
• end | |

It works fine in Selenium IDE with output:

• i: 2, j: 3
• i: 2, j: 2
• i: 2, j: 1
• i: 1, j: 3
• i: 1, j: 2
• i: 1, j: 1

But selenese runner missing some output, just:

• i: 2, j: 3
• i: 2, j: 2
• i: 2, j: 1
• i: 1, j: 3

How can we avoid this inconsistent? this code snippet should be ok:

• execute script | return 2; | i
• do | |
• execute script | return 3; | j
• do | |
• echo | i: ${i}, j: ${j} |
• execute script | return ${j} - 1; | j
• repeat if | ${j} > 0 |
• execute script | return ${i} - 1; | i
• repeat if | ${i} > 0 |

[2019/03/30]

This bug was fixed at version 3.22.0, see here.