This JIRA is a follow-on to an original issue believed resolved for 1.8.0 (ICE-3912).

It seems that in some cases the issue still occurs on FF3 (comments copied from ICE-3912, which is closed since it released with 1.8):

Chad Brandon added a comment - 07/May/09 06:12 PM
This issue doesn't appear to be fixed. I'm using 1.8.0 and I'm seeing the inputFile html disappear. It doesn't happen all the time, but seems to happen almost always when the method that does the upload takes 30 seconds or more to complete.

Mark Collette added a comment - 07/May/09 06:25 PM
Chad, which browser and version are you using? Is you internet connection stalling, or is the file just really large?

Chad Brandon added a comment - 07/May/09 06:33 PM
Thanks for the quick response Mark. The file is actually fairly small. But once I upload the file I run a process on it that takes about 30 seconds right after. The html seems to disappear about 2-5 seconds into the process (again not always, but most of the time; probably 3 out of 4 times). It happens in both firefox 3.0.10 and IE 8. Looking at the resulting html using firebug when the upload widget disappears I can see that the iframe that contains the component's contents no longer contains the html that it did before it disappeared.

Chad Brandon added a comment - 07/May/09 06:42 PM
Just another note: the progress indicator correctly shows that the file was uploaded fine once the method completes, its just the inputFile component that completely disappears.