Were the images drawn before or after the text?

[nablator]

Can you see the weird shape of the text on the right side?

Can you? Look closely. In nearly half of the lines the ink was getting smeared where the last glyphs were written. Clearly the quality of the parchment was not good enough for writing: whether it was wet or greasy I don't know, but they had to stop writing there as soon as it happened.

Something was spilled on the verso side:

   

Does the difference between the ink smearing and the outline of the stain on different sides suggest that the verso side was written first? The ink appears to have been dry at the time of the spill on the verso side. The most likely scenario IMHO is that the verso was written, then a liquid was spilled, it was quickly absorbed with a cloth and the ink was only slightly damaged. Then the recto side was written, carefully avoiding the area of the spill, but the liquid slowly seeped through the parchment, extending beyond the visible stain, surprising the scribe in unexpected areas.