Bug with scrset array in version 2.3.0?

Starting a few days ago I experienced the following problem. When uploadiong new images the scrset string has always the same bug: it eliminates the first character of the image name in the last entry. See the following example. The image name is “Lokki-Hardlaser.jpg”, but the last URL in the scrset is “okki-Hardlaser.jpg”

<img class="size-full wp-image-522" src="https://domain.com/wordpress/wp-content/uploads/Lokki-Hardlaser.jpg" srcset="https://domain.com/wordpress/wp-content/uploads/Lokki-Hardlaser-300x200.jpg 300w, https://domain.com/wordpress/wp-content/uploads/okki-Hardlaser.jpg 300w" alt="Lokki Hardlaser" width="300" height="200" sizes="(max-width: 300px) 100vw, 300px">

As mentioned this happended the first time a few days ago,and it happens always with every new image that is uploaded.

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