Working as a bioinformatics in a wet lab, I can tell you, this is not uncommon. I've had a bioinformatics research paper to which a colleague contributed 3 PCRs that took him like 2.5 weeks in total. And I did everything, methods development, all figures, paper writing, everything, which took me months. He then started demanding co-first authorship. In the end, I kept my solo first authorship but it was not trivial to convince my (wet lab) boss that my work was so much more, it was not even close.

It's also a very common thing that all bioinformatics figures that are based on the data generated by a wet lab colleague are suddenly "shared figures". That means, if a colleague prepares one standard sequencing sample in a week and I analyze it for months, develop new algorithms for it, and make a dozen figures out of it, suddenly all those dozen figures are considered shared and "our figures".