Is it possible to save the last opened folders in the left side like sublime? Only thing keeping me from using Textastic as its annoying to have to reopen all the folders I was previously working in every time I reopen the program.

Apologies for the somewhat non-specific title.

All of my files should be in UTF-8.  For source code it doesn't really matter (since valid symbols are in the ASCII 7-bit range and the primary base language is English) but when editing a gettext .po symbols file to update some of the translations I noticed, too late, that the encoding that was selected was ISO-8859-1†.  Before changing it, all of the previously UTF-8 text looked fine, or at least, I didn't notice any problems.  After changing the encoding back to UTF-8 and saving the file (where the file looks OK in the editor) and recompiling my .po file, the webapp encoding is completely destroyed.  Closing and re-opening the file, I get text like:

"les données à  une analyse"

The webapp presented this even worse if I attempted to manually set the browser encoding to ISO 8859-1; double conversion is ugly business.  Luckily I version control everything, so it could be rolled back, but a close look needs to be given to how Textastic handles file encoding.  So far I haven't been able to reproduce, but I will try to create a basic test case for you after work.

† Incorrectly called "ISO Latin 1" in your menus; it's "Latin 1" or "ISO 8859-1"… only Microsoft calls it by a mixed name as ISO standards are all numbered. ;)  More correct would be "Western (ISO 8859-1, Latin 1)", same for all of the other ISO 8859 variants, but that's a separate issue.

Textastic for Mac is not saving preferences.

It works on one of my machines, but not on the other.

I've tried to remove preference files, application, but it haven't helped.

If you turn on "Minimize Windows in to Application Icon" in Dock Preferences, and then minimise the Textastic window, there is no way to get it back! With other apps (e.g. Calculator, Mail) clicking on the app icon de-minimises any docked window, but with Textastic, all that happens is the menu bar comes to the front.