How to replicate (Everything is done with the new composer)
- Create a code block, a preformatted text with nothing on it
- Copy and paste the text using the keyboard’s clipboard function  (In this example using Google Keyboard, haven’t tested on others) (In this example using Google Keyboard, haven’t tested on others)
AnkiDroid Version = 2.22.2 (44bf67dc264fa0a99d44e84ed518e3a4dd8b0367)  
Expected behaviour
- If you use the Android paste function, press and hold, then it will paste the full text with no issues
AnkiDroid Version = 2.22.2 (44bf67dc264fa0a99d44e84ed518e3a4dd8b0367)  
Backend Version = 0.1.59-anki25.07.4 (25.07.4 e511d63b7ef57e7d7e81612a9905172b871d18df)  
Android Version = 15 (SDK 35)  
ProductFlavor = play  
Device Info = samsung | samsung | o1s | o1sxxx | SM-G991B | exynos2100  
Webview User Agent = Mozilla/5.0 (Linux; Android 15; SM-G991B Build/AP3A.240905.015.A2; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/139.0.7258.62 Mobile Safari/537.36  
ACRA UUID = ec00a895-ed42-45ec-8a32-e460dcc67355  
FSRS = 4.1.1 (Enabled: true)  
Crash Reports Enabled = true
Issue was found on Anki Forum