Bless saying "the file has been changed on disk" when no changes have been made

[Tomislav]

Observed:
- opened a binary file, 6-7MB in size, local filesystem; searched for a pattern, navigated using the scroll bar and the "file changed" message appears without any obvious reason
- the info bar cannot be closed/hidden by clicking "ignore"
- the info bar does not go away by clicking "reload"
- after that, bless cannot be shut down using <Alt>-F4 or clicking the 'x' window button (bless can be closed normally until the "file changed" message appears)

Expected:
- no "file changed" message appears until there are changes in the file
- the info bar disappears when clicking ignore or reload
- Bless can be closed via the usual means, like any other application

Reproducibility:
- 6/6

Workarounds:
- can close bless using kill -9 <bless PID>
- can reopen the file, but the message reappears shortly

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: bless 0.6.0-7
ProcVersionSignature: Ubuntu 5.4.0-163.180-generic 5.4.246
Uname: Linux 5.4.0-163-generic x86_64
NonfreeKernelModules: lkp_Ubuntu_5_4_0_163_180_generic_100 lkp_Ubuntu_5_4_0_163_180_generic_99
ApportVersion: 2.20.11-0ubuntu27.27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Wed Feb 28 13:21:38 2024
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-xenial-amd64-20160624-2
InstallationDate: Installed on 2018-05-10 (2120 days ago)
InstallationMedia: Ubuntu 16.04 "Xenial" - Build amd64 LIVE Binary 20160624-10:47
PackageArchitecture: all
SourcePackage: bless
UpgradeStatus: Upgraded to focal on 2023-10-02 (148 days ago)