Steps to reproduce:

1. run any script with text output on any host
2. try to resize text area in script's output window

Result:
text area can be resized only in vertical dimension

Expected:
text area or window could be resized vertical and horizontal dimensions
See screensots

I remember this ability definitely was in early version, perhaps in 6.0.12.

There is a similar ticket - ZBXNEXT-8332, but i would like you fix this behavior in LTS version too. Thanks.