I can reproduce the issue from comment 0 (copying).
I cannot reproduce the issue from comment 6 (deleting) as Xisco also said in comment 14.
Version: 6.4.0.0.alpha0+ (x64) Build ID: 41cd3e8e817c8c33a13608e62eeb06ce2c6977e4 CPU threads: 12; OS: Windows 10.0; UI render: GL; VCL: win; TinderBox: Win-x86_64@62-TDF, Branch:master, Time: 2019-09-01_22:04:10
I can reproduce the issue from comment 0 (copying).
I cannot reproduce the issue from comment 6 (deleting) as Xisco also said in comment 14.
Version: 6.4.0.0.alpha0+ (x64) 3a13608e62eeb06 ce2c6977e4
Build ID: 41cd3e8e817c8c3
CPU threads: 12; OS: Windows 10.0; UI render: GL; VCL: win;
TinderBox: Win-x86_64@62-TDF, Branch:master, Time: 2019-09-01_22:04:10