[Bug 1813353] [NEW] ctrl+g fails after ctrl+r and arrow up/down

[ñull]

Public bug reported:

The usual way to find previous commands is ctrl+r and then use the arrow
up/down keys. You can  exit the search with ctrl+g. One day this stopped
working (after an update of the package?). It still works when I don't
touch the arrow keys, but when you do, the only way I know to get out is
back-deleting the retrieved command.

$ lsb_release -rd
Description:    Ubuntu 16.04.5 LTS
$ bash --version
GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)
$ apt-cache policy bash
bash:
  Installed: 4.3-14ubuntu1.2
  Candidate: 4.3-14ubuntu1.2
  Version table:
 *** 4.3-14ubuntu1.2 500
        500 mirror://mirrors.ubuntu.com/mirrors.txt xenial-updates/main amd64 Packages
        500 mirror://mirrors.ubuntu.com/mirrors.txt xenial-security/main amd64 Packages
        100 /var/lib/dpkg/status
     4.3-14ubuntu1 500
        500 mirror://mirrors.ubuntu.com/mirrors.txt xenial/main amd64 Packages

** Affects: bash (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1813353

Title:
  ctrl+g fails after ctrl+r and arrow up/down

Status in bash package in Ubuntu:
  New

Bug description:
  The usual way to find previous commands is ctrl+r and then use the
  arrow up/down keys. You can  exit the search with ctrl+g. One day this
  stopped working (after an update of the package?). It still works when
  I don't touch the arrow keys, but when you do, the only way I know to
  get out is back-deleting the retrieved command.

  $ lsb_release -rd
  Description:    Ubuntu 16.04.5 LTS
  $ bash --version
  GNU bash, version 4.3.48(1)-release (x86_64-pc-linux-gnu)
  $ apt-cache policy bash
  bash:
    Installed: 4.3-14ubuntu1.2
    Candidate: 4.3-14ubuntu1.2
    Version table:
   *** 4.3-14ubuntu1.2 500
          500 mirror://mirrors.ubuntu.com/mirrors.txt xenial-updates/main amd64 Packages
          500 mirror://mirrors.ubuntu.com/mirrors.txt xenial-security/main amd64 Packages
          100 /var/lib/dpkg/status
       4.3-14ubuntu1 500
          500 mirror://mirrors.ubuntu.com/mirrors.txt xenial/main amd64 Packages

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