Showing custom tab in tray (instead of current) breaks Paste and Copy Next

Description of possible bug Choosing a custom tab in tray, instead of current (the default) breaks Paste and Copy Next

STR

1. Go to preferences / Tray
2. Untick show current tab in menu (eg in the tray menu)
3. Leave the default option in the drop-down, which I think is &clipboard
4. Save (ok) and leave the CopyQ window
5. In a text field, do "Paste and Copy Next"
6. do it a second time

Expected behavior Pastes first item, copies next item, pastes the second item

observed behabiour Pastes last item, doesn't copy next, paste the same item again and again.

I had changed this option many days ago, for unrelated reasons, so it took me some time to find the connection. But as soon as I went back to default, Paste and Copy Next started working again. I tried to find open and closed issues about this, so I tried to wait longer before first and second "Paste and copy next", to emulate a longer "sleep" function, didn't work.

Version, OS and Environment

CopyQ Clipboard Manager 6.2.0~bionic
Qt: 5.9.5
KNotifications: 5.44.0
Compiler: GCC
Arch: x86_64-little_endian-lp64
OS: Linux Mint 19.1

Cinnamon 4.0.10