See URL. Fixed upstream in revision 596 which I can confirm that fixes it.
https://bazaar.launchpad.net/~dabisu/sakura/sakura/revision/596
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=7f0a3eaea4bad1f148cdf1c031a083e3e4e7abf9 commit 7f0a3eaea4bad1f148cdf1c031a083e3e4e7abf9 Author: Jeroen Roovers <jer@gentoo.org> AuthorDate: 2018-11-04 12:16:25 +0000 Commit: Jeroen Roovers <jer@gentoo.org> CommitDate: 2018-11-04 12:16:58 +0000 x11-terms/sakura: Fix tab closing segmentation fault Fixes: https://bugs.gentoo.org/670216 Package-Manager: Portage-2.3.51, Repoman-2.3.11 Signed-off-by: Jeroen Roovers <jer@gentoo.org> .../sakura/files/sakura-3.6.0-tab-crash.patch | 60 +++++++++++++++++++ x11-terms/sakura/sakura-3.6.0-r1.ebuild | 67 ++++++++++++++++++++++ 2 files changed, 127 insertions(+)