byobu sets up the LS_COLORS environment variable based on /usr/share/byobu/profiles/dircolors which contains "LINK 4;5;37".
4 stands for underlined, 5 for blinking and 37 for white foreground, so the terminal emulator does what it is asked to do. I'm pretty sure this is not what byobu authors meant, so this is a bug in byobu. The same issue is also reproducible in xterm. The bug probably freshly appeared to you because gnome-terminal, as shipped by Ubuntu, only started supporting blinking text a couple of days ago with the 3.27.90 update. Before that, this parameter was silently ignored, so you should have seen underlined and white (but steady) text. (You can disable blinking in gnome-terminal's preferences, but that's a terrible workaround; byobu's dircolors file should be fixed instead.) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-terminal in Ubuntu. https://bugs.launchpad.net/bugs/1752352 Title: symbolic links are blinking with byobu Status in byobu package in Ubuntu: Confirmed Status in gnome-terminal package in Ubuntu: Confirmed Bug description: Test Case 1. Run byobu 2. ln -s . test_symlink 3. ls -d test_symlink Actual result test_symlink is blinking. Expected result test_symlink is not blinking with the default settings applied. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: gnome-terminal 3.27.90-1ubuntu1 ProcVersionSignature: Ubuntu 4.13.0-32.35-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Wed Feb 28 16:02:01 2018 InstallationDate: Installed on 2013-09-03 (1638 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha amd64 (20130902) ProcEnviron: TERM=screen-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: gnome-terminal UpgradeStatus: Upgraded to bionic on 2018-01-26 (33 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/byobu/+bug/1752352/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

