Sudden AdSense spike (CTR ~20%) → likely auto ads issue? Anyone seen this?

Hey,

I’m trying to figure out something weird with AdSense over the last few days.

Normally my site does:

• ~6–7k impressions/day
• ~100–120 clicks
• ~€10–15 revenue
• CTR in a normal range

Then suddenly (2 days):

• impressions ~10k
• clicks jumped to 300–370
• CTR went up to ~19–21%
• revenue €47–54

Traffic did increase a bit (from ~500 to ~770 users), but nothing that explains a 3x jump in clicks.

What’s interesting:

• no new major referrers (mostly “direct / keyword not defined”)
• user behavior looks normal (avg ~2.9 pages / ~110 sec)
• no obvious bot patterns

After digging, I noticed on mobile:

• an auto ad (anchor) slides up from the bottom
• it overlaps content and can be clicked accidentally

I disabled ads after that, and everything immediately dropped back to normal (~€14 / ~110 clicks).

So it looks like:
→ auto ads causing accidental clicks (not real engagement)

Questions:

• Have you seen CTR jump to ~20% from auto ads?
• Did Google later adjust earnings / flag anything?
• Do you fully disable anchor/interstitial ads on tool-type sites?

I’m leaning toward turning off fixed + aggressive formats completely, but curious if others ran into the same situation.

Thanks.