Button not getting enabled after sending text to field in iOS devices web automation

I am automating a web app using appium with Java client. In my automation, I need to write text on a field, enabling the 'continue' button and press it.

Firstly, I tried using

textField.sendKeys("text to send");

but it failed because, on iOS devices the 'continue' button was not getting enabled, I suppose the necessary events were not getting triggered to enable the button.

After some research, I ended up using Selenium Actions API. I created the following function

public void enterTextField(String txt) {
    WebDriverWait wait = new WebDriverWait(getDriver(), Duration.ofSeconds(20));
    wait.ignoring(StaleElementReferenceException.class)
        .until(ExpectedConditions.visibilityOfElementLocated(by));            
   
    new Actions(getDriver())
              .sendKeys(getDriver().findElement(textField), txt)
              .perform();
}

The problem is that this function always throws StaleElementReferenceException even though I find the element every time I call this function.

I even added a wait beforehand ignoring StaleElementReferenceException.

Also, I tried to catch it and find the element again but same problem.

public void enterTextField(String txt) {
    WebDriverWait wait = new WebDriverWait(getDriver(), 
    Duration.ofSeconds(20));
    wait.ignoring(StaleElementReferenceException.class)
        .until(ExpectedConditions.visibilityOfElementLocated(by));          
        
    try {
        new Actions(getDriver())
                .sendKeys(getDriver().findElement(textField), txt)
                .perform();
        } catch (StaleElementReferenceException e) {
            TestUtils.log().warn("Send keys to text field failed, retrying... {}", e.toString());
            new Actions(getDriver())
                    .sendKeys(getDriver().findElement(textField), txt)
                    .perform();
        }
    }

Any idea why this is happening? This is the first time I use selenium api directly, I usually automate native applications using appium java library instead.

Ultimately, in my case, the button had the disabled attribute, which was getting removed when the textfield was not empty.

So, what I did was to remove this property using javascriptExecutor, which lets me execute javascript code.

public void enterTextField(String txt) throws InterruptedException {
    getDriver().findElement(textField).sendKeys("My Text");
    
    ((JavascriptExecutor) getDriver()).executeScript("arguments[0].removeAttribute('disabled');",
                getDriver().findElement(continueButton));
    }