i have the same issue with 1.7 version.
emails are not showing when in email tab.
i also can't sort by date. things are back to normal when i restart browser.
it happens with all browsers i use (5) so i imagine it's not browser specific problem.
additionally, bottom navigation doesn't work properly. it shows no emails at all when i switch to email tab, it also shows 1 of 1 pages displayed in the footer, but if i type in number 12 to go to page no. 12, emails are displayed correctly.
i now changed imap folder settings, i just subscribed to additional folders, saved it and went to email tab to check emails.
all emails disappeared.
i got back to imap folder settings
all of folders were ticked.
once fetch imap folders pressed, only INBOX folder shows as selected and other selections disappears.
emails are still not displaying as it was before.