A complete theme https://addons.thunderbird.net/en-US/thunderbird/addon/phoenity-shredder/ does seem to fix the folder
display. Screen shot https://drive.google.com/open?id=16gxRlgL0xN-XA7MffWE6GlSNuayRgw4M
- Bug#914350: thunderbird: click arrows indicatin... Bernie Elbourn 07974226865
- Bug#914350: Further information Bernie Elbourn
- Bug#914350: Work round Bernie Elbourn