Issue 21450: [Issue 13630] IDLE: Find(ed) text is not highlighted while dialog box is open

I was delighted with the behaviour of IDLE in version 3.4 until I noticed
the problem of the matches with the non highlighted background in the
modified (and in this sense improved) iterative text search operations. I
was wondering how could this be possible at all in the present luxuriant
stage of Python's evolution when now I see that this is a very old and
probably cronic problem! What a pity!

I have tried to test your *SearchBar* extension, Tal, but, after following
the installation instructions of the *README* file, no bar appears at all
in the editor window as well in version 3.3 as in 3.4 (WIndows7). As the
process is not that difficult, I think that I am performing it correctly.
Any idea of what can be wrong in spite of it?

Thanks.