Popup issue on iPad

I have observed an issue or what seems like a bug on iPad Safari.

Basically I have a link to open a popup using the normal window.open() Javascript method. Now this works fine most of the times on iPad Safari, but on a few instances, it opens the child page in the same window (rath开发者_JAVA技巧er than a separate child window) It happens once in like 25 tries.

Please let me know if this is a known iPad issue OR if you have observed this inconsistent behavior with popups on your pages.

Thank you.