Searches in bash don't works

[William]

Hi. It's the first time I send a message about a bug using bashbug. I 
don't known if the message was sent properly. So, I repeat it that way.


Machine: i686

OS: linux-gnu
Compiler: gcc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i686' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i686-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DLOCALEDIR='/usr/share/locale' -DPACKAGE='bash' 
-DSHELL -DHAVE_CONFIG_H   -I.  -I../. -I.././include -I.././lib 
-D_FORTIFY_SOURCE=2 -g -O2 -fstack-protector --param=ssp-buffer-size=4 
-Wformat -Werror=format-security -Wall
uname output: Linux equipo 4.4.0-210-generic #242~14.04.1-Ubuntu SMP Fri 
Apr 16 15:02:48 UTC 2021 i686 i686 i686 GNU/Linux
Machine Type: i686-pc-linux-gnu

Bash Version: 4.3
Patch Level: 11
Release Status: release

Description:
    [Detailed description of the problem, suggestion, or complaint.]
*Simply, searching only shows coincidences in the visible text of the 
window.*
Repeat-By:
    [Describe the sequence of events that causes the problem
    to occur.]
*You search anything; if the term is not visible in the window, you 
don't obtain results. If you scroll, you can obtain a result if visible.**
**Fix:*
    [Description of how to fix the problem.  If you don't know a
    fix for the problem, don't include this section.]