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Description
Not sure if this is fixed but "Mint" seems to ship version 1.0.1 Jun 2019
Start gtkterm with some text being generated by a source.
Select, "log", "to file", specify name
Log some lines
$ cat log.txt | wc -l
55
Re-start gtkterm
Select "log", to file, specify name
"File already exists, replacing it will overwrite its contents"
Select "Replace"
$ cat log.txt | wc -l
68
Appended then, not overwritten.....