Regarding the sidebar, please try this:

1. Close all Textastic windows
2. Quit Textastic
3. Run this command in the Terminal app: 

defaults delete com.textasticapp.textastic-mac "NSSplitView Subview Frames SplitView"

This should reset the sidebar width to the default. 

Thanks for the video. I can now reproduce the problem. 

When closing the window, the app should ask if you want to save untitled files, but for some reason it doesn't. This looks like a bug. It definitely used to work on earlier macOS versions.

To work around this issue, please close the tab instead of the window using the "X" button on the tab or by pressing Cmd-W, or using File > Close Tab. Then it should ask if you want to save or delete the untitled file.

Thanks for letting me know about this issue! I'll investigate.

When you press "Show Sidebar", it looks like there is a very thin (2 pixels wide?) sidebar appearing on the left. Can you please try to move your mouse to the left side of the window and drag the sidebar to make it wider? There should actually be a minimum width for the sidebar, but it looks like for some reason this isn't honored.

I'm using Textastic for Mac daily myself and haven't encountered the issues you are describing, so I'm not sure what's going on.

Does quitting the app (Textastic -> Quit Textastic) and restarting it change the behavior?

The trial version shouldn't show different behavior than the App Store version except for the trial window that appears when starting the app.

This is the Settings app:

Open it and go to Apps > Textastic and enable “Reset Recent Files”.

Here is a screenshot:

So you did go to Settings (the system settings app) -> Apps -> Textastic, enable "Reset Recent Files" and Textastic still crashes on launch?

I was talking about the Settings app, not the settings within Textastic. Can you please try that?

Also, do you have any TestFlight apps installed? I've seen problems launching the app when there are expired TestFlight builds.

Hello,

Thank you for reaching out, and I’m sorry to hear the app isn’t opening anymore.

Please try the following:

• Open the Settings app.
• Scroll down and tap "Apps".
• Find "Textastic" in the list of apps and tap it.
• Enable the "Reset Recent Files" option.
• Launch Textastic.

If the issue persists, could you please let me know:

• Your device model and iOS/iPadOS version
• Whether the app crashes immediately after launching or shows a blank screen

This information will help me investigate further and find a solution quickly.

Ok, thanks!

Are you using the latest version: Textastic 10.8?

I have tried to reproduce the problem with the following configuration:

• iPad Pro M4 13” 
• External Display
• Apple Magic Keyboard
• iPadOS 26.0.1
• Textastic 10.8

I have opened a file from Secure ShellFish.

In my tests, the cursor never jumped to the start of the file when clicking the editor while Textastic is on the external monitor. 

So it would be great if you could give me more details when this happens exactly.

Does this happen only with files opened from Secure ShellFish or other files, too?