When editing a comment (in an off-page balloon), it is possible to manually set its direction to LTR or RTL, using the toolbar. However, it is _not_ possible to set it using the keyboard shortcuts Ctrl+LShift and Ctrl+RShift, which usually switch direction (and work when editing text on the page proper).
I'm guessing somebody just forgot to enable these somewhere.
A possibly-related issue: bug 114733.
Build ID: d1b41307be3f8c19fe6f1938cf056e7ff1eb1d18
CPU threads: 4; OS: Linux 4.9; UI render: default; VCL: gtk3;
Locale: en-US (en_IL); UI-Language: en-US
but seen at least as early as 5.6.x versions and probably much earlier still.
I can confirm that the bug is present.
Build ID: 0c292870b25a325b5ed35f6b45599d2ea4458e77
CPU threads: 2; OS: Windows 6.1; UI render: default;
Locale: en-US (en_US); Calc: group
(In reply to Durgapriyanka from comment #1)
> I can confirm that the bug is present.
Confirming as per Durgapriyanka's comment.
Repro with 3.3.0 on Win 10.