Scriptlets/JS rules are not applied on the first reload #2479

Please answer the following questions for yourself before submitting an issue

• Filters were updated before reproducing an issue
• I checked the knowledge base and found no answer
• I checked to make sure that this issue has not already been filed

AdGuard version

4.5.12(1038)

Environment

• OS: iOS 26, iOS 18.6.2
• Device: iPad Air, iPhone 15 Pro

Ad Blocking

AdGuard Base filter, AdGuard Mobile Ads filter

Privacy

AdGuard Tracking Protection filter

Social

AdGuard Social Media filter

Annoyances

AdGuard Annoyances filter

Security

No response

Other

No response

Language-specific

No response

Advanced protection for Safari

• yes, I do

Which DNS server do you use?

System default

DNS protocol

Regular

Custom DNS

No response

DNS filtering

• yes, I do

Custom DNS filter

No response

DNS implementation

DNS protection disabled

Tunnel mode

DNS protection disabled

Low-level settings

Issue Details

Steps to reproduce:

1. Add to user rules:

example.org#%#alert(1);

2. Navigate to - https://example.org/
3. Alert is displayed (it's okay)
4. Reload website
5. Now alert is not displayed (bug)
6. Reload website
7. Alert is displayed again and it's now displayed on every reload

Once the website was reloaded more than once it's necessary to close Safari (open the App Switcher and remove Safari) to repeat it.

Expected Behavior

Scriptlet and JS rules should be applied on the first reload.

Actual Behavior

Scriptlet and JS rules are not applied on the first reload.

Screenshots

No response

Additional Information

No response