1. click 'show log' menu
2. select one revision
3. select some items below
4. right mouse and click 'show multiple changes' menu
5. and then u will find something wrong. i hope it will compare all the selected items, but not.
version:
TortoiseSVN 1.9.2, Build 26806 - 64 Bit , 2015/09/22 18:33:30
Subversion 1.9.2, -release
apr 1.5.2
apr-util 1.5.4
serf 1.3.8
OpenSSL 1.0.2d 9 Jul 2015
zlib 1.2.8
SQLite 3.8.11.1
TortoiseSVN 1.10.0, Build 28176 - 32 Bit , 2018/04/14 08:00:32
ipv6 enabled
Subversion 1.10.0, -dev
apr 1.6.3
apr-util 1.6.1
serf 1.3.9
OpenSSL 1.1.0h 27 Mar 2018
zlib 1.2.11
SQLite 3.23.1
both fail.