Piano roll follows the progress bar Button have no effect

[twerq]

Piano roll follow the progress bar Button being deactivated have no effect on progress bar following. i. e. the progress bar remains be followed by piano roll

Watch the screencast for details, here please.

built from source on linux mint 19.3
seq64 0.96.7
2020-02-16

build info:
Built Mar 8 2020 20:27:31:
C++ version 201402
App name: seq64; type gtk; engine rtmidi
App build OS: Linux catsys 4.13.0-45-generic #50~16.04.1-Ubuntu SMP Wed May 30 11:18:27 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
Native JACK/ALSA (rtmidi) on
Event editor on
Follow progress bar on
Highlight edit pattern on
Highlight empty patterns on
JACK session on
JACK support on
Seq32 chord generator, LFO window, menu buttons, transpose on
BPM Tap button, solid piano-roll grid on
Song performance recording on
Optional pattern coloring on
Multiple main windows on
Pause support on
Save time-sig/tempo on
64-bit support enabled