scrollIntoView() not working for horizontal scroll (Selenium)

Element.scrollIntoView()

Element.scrollIntoView() method scrolls the element on which it’s called into the Viewport of the browser window.

The parameters for this method are:

alignToTop (Optional): Is a Boolean value, if true, the top of the element will be aligned to the top of the visible area of the scrollable ancestor. This is the default value. If false, the bottom of the element will be aligned to the bottom of the visible area of the scrollable ancestor. Corresponds to scrollIntoViewOptions: {block: “end”, inline: “nearest”}.
scrollIntoViewOptions (Optional): Is an Object with the following properties:
behavior (Optional): Defines the transition animation. One of “auto” or “smooth”. Defaults to “auto”.
block (Optional): Defines vertical alignment. One of “start”, “center”, “end”, or “nearest”. Defaults to “start”.
inline (Optional): Defines horizontal alignment. One of “start”, “center”, “end”, or “nearest”. Defaults to “nearest”.

As per your line of code:

((JavascriptExecutor) driver).executeScript("arguments[0].scrollIntoView(true);", element);

the argument true refers to boolean value for alignToTop. Hence the issue.

To automate horizontal scrolling you need to pass the argument for the inline parameter either among the following:

As an alternative you can use either of the following options

scrollLeft(): Element.scrollLeft() property gets or sets the number of pixels that an element’s content is scrolled from its left edge. If the element’s direction is rtl (right-to-left), then scrollLeft is 0 when the scrollbar is at its rightmost position (at the start of the scrolled content), and then increasingly negative as you scroll towards the end of the content.
scrollWidth(): Element.scrollWidth() read-only property is a measurement of the width of an element’s content, including content not visible on the screen due to overflow.

You can find a couple of relevant detailed discussion in: