Greasy Fork镜像

Now I'm using 1.14.1077.41 (Stable channel) （x64） Vivaldi browser.
When I using 1.13 stable there is no problem installing scripts by greasyfork using tampermonky(version 4.5).
But when I turn to 1.14 stable (1.14 snapshot also cannot do the right thing, so at that time I turned to stable version) when I click on the "intall this scripts" button, It turned out to download the script instead to install the script? How to solve this problem?
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Can you actually to install a userscripts with Vivaldi 1.14 at all? Did you check another sources except greasyfork?

Seems like the problem with your browser or the scripts manager